/* ============================================
   VIHARGEN REGISTRATION FORM - MODERN VERSION
   WITH FULL DARK MODE SUPPORT
   ============================================ */

/* ----- Import Google Fonts ----- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* ----- CSS Variables / Custom Properties ----- */
:root {
    /* Light Mode Variables */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --primary-color: #667eea;
    --primary-dark: #5a6fd6;
    --secondary-color: #764ba2;
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-muted: #8888aa;
    --border-color: #e2e8f0;
    --bg-white: #ffffff;
    --bg-light: #f8f9fc;
    --bg-lighter: #fafbfc;
    --bg-hover: #f0f2f6;
    --shadow-sm: 0 2px 8px rgba(102, 126, 234, 0.12);
    --shadow-md: 0 8px 30px rgba(102, 126, 234, 0.18);
    --shadow-lg: 0 20px 60px rgba(102, 126, 234, 0.25);
    --shadow-xl: 0 30px 80px rgba(102, 126, 234, 0.35);
    --input-bg: #fafbfc;
    --input-border: #e2e8f0;
    --input-focus-bg: #ffffff;
    --placeholder-color: #b0b8c8;
    --divider-color: #e2e8f0;
    --req-bg: #f8f9fc;
    --req-border: #edf0f5;
    --note-bg: linear-gradient(135deg, #e8f0fe, #dce6f5);
    --note-text: #1a5c9e;
    --card-bg: rgba(255, 255, 255, 0.96);
    --overlay-bg: rgba(255, 255, 255, 0.96);
    --social-btn-bg: linear-gradient(135deg, #f8f9fc, #eef0f4);
    --social-btn-border: #e2e8f0;
    --social-btn-hover: #ffffff;
    --login-note-color: #8888aa;
    --strength-bg: #eef0f4;
    --error-color: #ff3b30;
    --success-color: #4cd964;
    --warning-color: #ff9500;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   DARK MODE - APPLIED VIA DATA-THEME ATTRIBUTE
   ============================================ */
html[data-theme="dark"] {
    --text-primary: #e8e8f0;
    --text-secondary: #b0b0c8;
    --text-muted: #8888aa;
    --border-color: #3d3d5a;
    --bg-white: #1a1a2e;
    --bg-light: #22223a;
    --bg-lighter: #2a2a42;
    --bg-hover: #33334d;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 30px 80px rgba(0, 0, 0, 0.6);
    --input-bg: #22223a;
    --input-border: #3d3d5a;
    --input-focus-bg: #2a2a42;
    --placeholder-color: #666688;
    --divider-color: #3d3d5a;
    --req-bg: #22223a;
    --req-border: #3d3d5a;
    --note-bg: linear-gradient(135deg, #1a2a4e, #1a2a5e);
    --note-text: #8ab4f8;
    --card-bg: rgba(26, 26, 46, 0.96);
    --overlay-bg: rgba(26, 26, 46, 0.96);
    --social-btn-bg: linear-gradient(135deg, #2a2a42, #33334d);
    --social-btn-border: #3d3d5a;
    --social-btn-hover: #33334d;
    --login-note-color: #8888aa;
    --strength-bg: #3d3d5a;
    --error-color: #ff6b6b;
    --success-color: #69db7c;
    --warning-color: #ffd43b;
}

/* ============================================
   DARK MODE - APPLIED VIA BODY CLASS
   ============================================ */
body.dark-mode {
    --text-primary: #e8e8f0;
    --text-secondary: #b0b0c8;
    --text-muted: #8888aa;
    --border-color: #3d3d5a;
    --bg-white: #1a1a2e;
    --bg-light: #22223a;
    --bg-lighter: #2a2a42;
    --bg-hover: #33334d;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 30px 80px rgba(0, 0, 0, 0.6);
    --input-bg: #22223a;
    --input-border: #3d3d5a;
    --input-focus-bg: #2a2a42;
    --placeholder-color: #666688;
    --divider-color: #3d3d5a;
    --req-bg: #22223a;
    --req-border: #3d3d5a;
    --note-bg: linear-gradient(135deg, #1a2a4e, #1a2a5e);
    --note-text: #8ab4f8;
    --card-bg: rgba(26, 26, 46, 0.96);
    --overlay-bg: rgba(26, 26, 46, 0.96);
    --social-btn-bg: linear-gradient(135deg, #2a2a42, #33334d);
    --social-btn-border: #3d3d5a;
    --social-btn-hover: #33334d;
    --login-note-color: #8888aa;
    --strength-bg: #3d3d5a;
    --error-color: #ff6b6b;
    --success-color: #69db7c;
    --warning-color: #ffd43b;
}

/* ----- Main Container ----- */
.vihargen-registration-wrapper {
    max-width: 660px;
    margin: 40px auto;
    padding: 48px 44px 40px;
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    position: relative;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

/* Animated background particles */
.vihargen-registration-wrapper::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
    animation: floatBg 15s ease-in-out infinite;
}

html[data-theme="dark"] .vihargen-registration-wrapper::after,
body.dark-mode .vihargen-registration-wrapper::after {
    background: radial-gradient(circle, rgba(102, 126, 234, 0.08) 0%, transparent 70%);
}

@keyframes floatBg {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.vihargen-registration-wrapper > * {
    position: relative;
    z-index: 2;
}

.vihargen-registration-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    z-index: 1;
}

/* ----- Dark Mode Toggle Button ----- */
.vihargen-dark-mode-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 28px;
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    font-family: 'Inter', sans-serif;
    width: 100%;
    max-width: 340px;
    margin: 0 auto 20px;
}

.vihargen-dark-mode-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.vihargen-dark-mode-toggle .toggle-icon {
    font-size: 18px;
}

html[data-theme="dark"] .vihargen-dark-mode-toggle,
body.dark-mode .vihargen-dark-mode-toggle {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* ----- Header ----- */
.vihargen-header {
    text-align: center;
    margin-bottom: 32px;
    position: relative;
}

.vihargen-header h2 {
    font-size: 34px;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    font-family: 'Inter', sans-serif;
    letter-spacing: -0.5px;
}

.vihargen-header p {
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 400;
    margin: 0;
    font-family: 'Inter', sans-serif;
}

/* ============================================
   SOCIAL LOGIN SECTION - MODERN
   ============================================ */
.vihargen-social-login {
    margin-bottom: 28px;
    padding: 0;
}

/* Google Button - Above Divider */
.social-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 8px 0 18px 0;
}

#google-signin-button {
    width: 100%;
    max-width: 340px;
    min-height: 44px;
    transition: var(--transition);
}

#google-signin-button > div {
    width: 100% !important;
    max-width: 340px !important;
    min-height: 44px !important;
}

#google-signin-button iframe {
    width: 100% !important;
    min-height: 44px !important;
    border-radius: var(--radius-sm) !important;
    box-shadow: var(--shadow-sm) !important;
}

/* Modern Divider */
.social-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 16px 0 14px 0;
    gap: 16px;
}

.social-divider::before,
.social-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.social-divider span {
    padding: 0 20px;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    background: var(--bg-white);
    white-space: nowrap;
    font-family: 'Inter', sans-serif;
}

html[data-theme="dark"] .social-divider span,
body.dark-mode .social-divider span {
    background: var(--bg-white);
}

/* ============================================
   FORM ELEMENTS - MODERN
   ============================================ */
.vihargen-form-group {
    margin-bottom: 22px;
    position: relative;
}

.vihargen-form-group label {
    display: block;
    margin-bottom: 7px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
    font-family: 'Inter', sans-serif;
    letter-spacing: 0.3px;
}

.vihargen-form-group label .required {
    color: var(--error-color);
    margin-left: 2px;
}

.vihargen-form-group input,
.vihargen-form-group select,
.vihargen-form-group textarea {
    width: 100%;
    padding: 13px 16px;
    border: 2px solid var(--input-border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
    box-sizing: border-box;
    background: var(--input-bg);
    color: var(--text-primary);
}

.vihargen-form-group input:hover,
.vihargen-form-group select:hover,
.vihargen-form-group textarea:hover {
    background: var(--bg-hover);
    border-color: var(--border-color);
}

.vihargen-form-group input:focus,
.vihargen-form-group select:focus,
.vihargen-form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    background: var(--input-focus-bg);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

html[data-theme="dark"] .vihargen-form-group input:focus,
html[data-theme="dark"] .vihargen-form-group select:focus,
html[data-theme="dark"] .vihargen-form-group textarea:focus,
body.dark-mode .vihargen-form-group input:focus,
body.dark-mode .vihargen-form-group select:focus,
body.dark-mode .vihargen-form-group textarea:focus {
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.2);
}

.vihargen-form-group input::placeholder,
.vihargen-form-group select::placeholder,
.vihargen-form-group textarea::placeholder {
    color: var(--placeholder-color);
    font-weight: 400;
}

.vihargen-form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ----- Form Row (2 columns) ----- */
.vihargen-form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 0;
}

.vihargen-form-group.half {
    flex: 1;
    margin-bottom: 0;
    min-width: 0;
}

/* ============================================
   PASSWORD FIELD - MODERN
   ============================================ */
.password-wrapper {
    position: relative;
}

.password-wrapper input {
    padding-right: 52px;
}

.toggle-password {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 20px;
    padding: 8px;
    z-index: 3;
    transition: var(--transition);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.toggle-password:hover {
    background: rgba(102, 126, 234, 0.08);
    transform: translateY(-50%) scale(1.05);
}

html[data-theme="dark"] .toggle-password:hover,
body.dark-mode .toggle-password:hover {
    background: rgba(102, 126, 234, 0.15);
}

/* ============================================
   PASSWORD STRENGTH - MODERN
   ============================================ */
.password-strength {
    margin-top: 12px;
}

.strength-bar {
    height: 5px;
    background: var(--strength-bg);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.strength-bar::before {
    content: '';
    display: block;
    height: 100%;
    width: 0%;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1), background 0.4s ease;
    border-radius: 4px;
}

.strength-bar.weak::before {
    width: 33%;
    background: linear-gradient(90deg, var(--error-color), #ff6b6b);
}

.strength-bar.medium::before {
    width: 66%;
    background: linear-gradient(90deg, var(--warning-color), #ffcc00);
}

.strength-bar.strong::before {
    width: 100%;
    background: linear-gradient(90deg, var(--success-color), #34c759);
}

.strength-text {
    font-size: 13px;
    margin-top: 6px;
    text-align: right;
    color: var(--text-muted);
    min-height: 20px;
    font-weight: 500;
    font-family: 'Inter', sans-serif;
}

/* ============================================
   PASSWORD REQUIREMENTS - MODERN
   ============================================ */
.password-requirements {
    background: var(--req-bg);
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-top: 12px;
    border: 1px solid var(--req-border);
    transition: var(--transition);
}

.password-requirements:hover {
    border-color: var(--border-color);
}

.req-title {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-size: 13px;
    font-family: 'Inter', sans-serif;
}

.req-list {
    list-style: none;
    padding: 0;
    margin: 0 0 6px 0;
}

.req-item {
    margin: 5px 0;
    padding: 3px 0;
    font-size: 13px;
    color: var(--error-color);
    transition: var(--transition);
    font-family: 'Inter', sans-serif;
    display: flex;
    align-items: center;
    gap: 6px;
}

.req-item.valid {
    color: var(--success-color);
}

.req-item.invalid {
    color: var(--error-color);
}

.req-item strong {
    background: var(--bg-hover);
    padding: 1px 8px;
    border-radius: 4px;
    font-family: 'SF Mono', 'Courier New', monospace;
    font-size: 12px;
    color: var(--text-primary);
    font-weight: 600;
}

html[data-theme="dark"] .req-item strong,
body.dark-mode .req-item strong {
    background: var(--bg-light);
    color: var(--text-secondary);
}

.password-note {
    background: var(--note-bg);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    color: var(--note-text);
    font-size: 12px;
    margin-top: 10px;
    border-left: 4px solid var(--primary-color);
    line-height: 1.6;
    font-family: 'Inter', sans-serif;
    font-weight: 500;
}

html[data-theme="dark"] .password-note,
body.dark-mode .password-note {
    background: linear-gradient(135deg, #1a2a4e, #1a2a5e);
    color: #8ab4f8;
}

/* ============================================
   CHECKBOX - MODERN
   ============================================ */
.vihargen-checkbox {
    margin: 24px 0 22px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.vihargen-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    min-width: 20px;
    margin-top: 1px;
    cursor: pointer;
    border: 2px solid var(--input-border);
    border-radius: 6px;
    transition: var(--transition);
    background: var(--input-bg);
    accent-color: var(--primary-color);
    -webkit-appearance: none;
    appearance: none;
    position: relative;
}

.vihargen-checkbox input[type="checkbox"]:checked {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.vihargen-checkbox input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
}

.vihargen-checkbox input[type="checkbox"]:focus {
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.15);
}

html[data-theme="dark"] .vihargen-checkbox input[type="checkbox"]:focus,
body.dark-mode .vihargen-checkbox input[type="checkbox"]:focus {
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.25);
}

.vihargen-checkbox label {
    margin: 0;
    font-weight: 400;
    font-size: 14px;
    line-height: 1.6;
    cursor: pointer;
    color: var(--text-secondary);
    font-family: 'Inter', sans-serif;
}

.vihargen-checkbox label a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.vihargen-checkbox label a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* ============================================
   SUBMIT BUTTON - MODERN
   ============================================ */
#registerBtn {
    width: 100%;
    padding: 16px 24px;
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 17px;
    font-weight: 700;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    position: relative;
    overflow: hidden;
}

#registerBtn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

#registerBtn:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.4);
}

#registerBtn:hover:not(:disabled)::after {
    width: 300px;
    height: 300px;
}

#registerBtn:active:not(:disabled) {
    transform: translateY(0);
}

#registerBtn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* ============================================
   LINKS - MODERN
   ============================================ */
.vihargen-links {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.vihargen-links a {
    display: inline-block;
    margin: 0 12px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
    position: relative;
}

.vihargen-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: var(--transition);
}

.vihargen-links a:hover {
    color: var(--primary-color);
}

.vihargen-links a:hover::after {
    width: 100%;
}

/* ============================================
   ERROR & SUCCESS MESSAGES - MODERN
   ============================================ */
.error-message {
    color: var(--error-color);
    font-size: 13px;
    display: block;
    margin-top: 6px;
    min-height: 22px;
    font-weight: 500;
    font-family: 'Inter', sans-serif;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Input error state */
.error {
    border-color: var(--error-color) !important;
    background-color: rgba(255, 59, 48, 0.05) !important;
}

html[data-theme="dark"] .error,
body.dark-mode .error {
    background-color: rgba(255, 59, 48, 0.1) !important;
}

.error:focus {
    box-shadow: 0 0 0 4px rgba(255, 59, 48, 0.12) !important;
}

/* ============================================
   FORM MESSAGE - MODERN
   ============================================ */
#registerMessage {
    margin-top: 24px;
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    text-align: center;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    display: none;
    animation: slideUp 0.4s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#registerMessage.success {
    background: linear-gradient(135deg, var(--success-color), #28a745);
    color: #fff;
    display: block;
    box-shadow: 0 4px 15px rgba(52, 199, 89, 0.3);
}

#registerMessage.error {
    background: linear-gradient(135deg, var(--error-color), #dc3545);
    color: #fff;
    display: block;
    box-shadow: 0 4px 15px rgba(255, 59, 48, 0.3);
}

/* ============================================
   LOGGED IN MESSAGE
   ============================================ */
.vihargen-message {
    background: var(--note-bg);
    padding: 24px 28px;
    border-radius: var(--radius-md);
    text-align: center;
    border-left: 5px solid var(--primary-color);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-weight: 500;
}

html[data-theme="dark"] .vihargen-message,
body.dark-mode .vihargen-message {
    background: linear-gradient(135deg, #1a2a4e, #1a2a5e);
    color: var(--text-primary);
}

.vihargen-message a {
    color: var(--primary-color);
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
}

.vihargen-message a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* ============================================
   LOGIN WITH EMAIL SECTION - MODERN
   ============================================ */
.vihargen-login-email-section {
    margin: 8px 0 12px 0;
    padding: 0;
}

.login-email-button-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 12px 0 10px 0;
}

.vihargen-login-email-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 13px 28px;
    background: var(--social-btn-bg);
    color: var(--text-primary);
    border: 2px solid var(--social-btn-border);
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    text-decoration: none;
    transition: var(--transition);
    width: 100%;
    max-width: 340px;
    cursor: pointer;
}

.vihargen-login-email-btn:hover {
    transform: translateY(-2px);
    border-color: var(--primary-color);
    background: var(--social-btn-hover);
    box-shadow: var(--shadow-md);
    color: var(--text-primary);
    text-decoration: none;
}

.vihargen-login-email-btn .login-icon {
    font-size: 20px;
}

.vihargen-login-note {
    text-align: center;
    font-size: 14px;
    color: var(--login-note-color);
    margin: 10px 0 0 0;
    font-family: 'Inter', sans-serif;
}

.vihargen-login-note a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.vihargen-login-note a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* ============================================
   GOOGLE BUTTON DARK MODE FIX
   ============================================ */
html[data-theme="dark"] #google-signin-button iframe,
body.dark-mode #google-signin-button iframe {
    filter: brightness(0.9) contrast(1.1);
}

html[data-theme="dark"] #google-signin-button .gsi-material-button,
body.dark-mode #google-signin-button .gsi-material-button {
    background: var(--bg-light) !important;
    border-color: var(--border-color) !important;
}

html[data-theme="dark"] #google-signin-button .gsi-material-button .gsi-material-button-content-wrapper,
body.dark-mode #google-signin-button .gsi-material-button .gsi-material-button-content-wrapper {
    color: var(--text-primary) !important;
}

/* ============================================
   RESPONSIVE DESIGN - IMPROVED
   ============================================ */

/* ----- Tablet & Mobile (up to 768px) ----- */
@media (max-width: 768px) {
    .vihargen-registration-wrapper {
        margin: 20px 16px;
        padding: 28px 20px 24px;
        border-radius: var(--radius-md);
    }
    
    .vihargen-header h2 {
        font-size: 26px;
    }
    
    .vihargen-header p {
        font-size: 14px;
    }
    
    .vihargen-form-group {
        margin-bottom: 18px;
    }
    
    .vihargen-form-group label {
        font-size: 13px;
    }
    
    .vihargen-form-group input,
    .vihargen-form-group select,
    .vihargen-form-group textarea {
        padding: 11px 14px;
        font-size: 14px;
    }
    
    /* Form row becomes single column */
    .vihargen-form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .vihargen-form-group.half {
        width: 100%;
        margin-bottom: 18px;
    }
    
    .vihargen-form-group.half:last-child {
        margin-bottom: 0;
    }
    
    #registerBtn {
        padding: 14px 20px;
        font-size: 15px;
    }
    
    .vihargen-links {
        margin-top: 20px;
        padding-top: 20px;
    }
    
    .vihargen-links a {
        display: block;
        margin: 6px 0;
        font-size: 13px;
    }
    
    .password-requirements {
        padding: 12px 14px;
    }
    
    .req-item {
        font-size: 12px;
    }
    
    .social-divider span {
        font-size: 11px;
        padding: 0 12px;
    }
    
    #google-signin-button {
        max-width: 100%;
    }
    
    #google-signin-button > div {
        max-width: 100% !important;
    }
    
    .vihargen-login-email-btn {
        max-width: 100%;
        padding: 12px 20px;
        font-size: 14px;
    }
    
    .vihargen-dark-mode-toggle {
        max-width: 100%;
        padding: 10px 20px;
        font-size: 13px;
    }
}

/* ----- Small Mobile (up to 480px) ----- */
@media (max-width: 480px) {
    .vihargen-registration-wrapper {
        margin: 12px 10px;
        padding: 20px 14px 18px;
        border-radius: var(--radius-sm);
    }
    
    .vihargen-header {
        margin-bottom: 22px;
    }
    
    .vihargen-header h2 {
        font-size: 22px;
    }
    
    .vihargen-header p {
        font-size: 13px;
    }
    
    .vihargen-form-group {
        margin-bottom: 15px;
    }
    
    .vihargen-form-group label {
        font-size: 12px;
        margin-bottom: 5px;
    }
    
    .vihargen-form-group input,
    .vihargen-form-group select,
    .vihargen-form-group textarea {
        padding: 9px 12px;
        font-size: 13px;
        border-radius: 6px;
    }
    
    .vihargen-form-group.half {
        margin-bottom: 15px;
    }
    
    #registerBtn {
        padding: 13px 16px;
        font-size: 14px;
        border-radius: 6px;
    }
    
    .vihargen-checkbox {
        margin: 18px 0 16px;
        gap: 10px;
    }
    
    .vihargen-checkbox input[type="checkbox"] {
        width: 18px;
        height: 18px;
        min-width: 18px;
        margin-top: 1px;
    }
    
    .vihargen-checkbox label {
        font-size: 13px;
    }
    
    .vihargen-links {
        margin-top: 16px;
        padding-top: 16px;
    }
    
    .vihargen-links a {
        font-size: 12px;
        margin: 5px 0;
    }
    
    .password-requirements {
        padding: 10px 12px;
    }
    
    .req-title {
        font-size: 12px;
    }
    
    .req-item {
        font-size: 11px;
        margin: 4px 0;
    }
    
    .req-item strong {
        font-size: 10px;
        padding: 1px 6px;
    }
    
    .password-note {
        font-size: 11px;
        padding: 8px 12px;
    }
    
    .strength-text {
        font-size: 12px;
    }
    
    .toggle-password {
        font-size: 17px;
        right: 10px;
        width: 34px;
        height: 34px;
    }
    
    #registerMessage {
        padding: 12px 16px;
        font-size: 14px;
        margin-top: 18px;
    }
    
    .social-divider {
        margin: 12px 0 10px 0;
        gap: 10px;
    }
    
    .social-divider span {
        font-size: 10px;
        padding: 0 10px;
        letter-spacing: 1px;
    }
    
    .social-buttons {
        margin: 4px 0 12px 0;
    }
    
    .vihargen-login-email-btn {
        padding: 10px 16px;
        font-size: 13px;
        max-width: 100%;
        gap: 8px;
    }
    
    .vihargen-login-email-btn .login-icon {
        font-size: 16px;
    }
    
    .vihargen-login-note {
        font-size: 12px;
        margin: 6px 0 0 0;
    }
    
    .vihargen-dark-mode-toggle {
        max-width: 100%;
        padding: 8px 16px;
        font-size: 12px;
    }
}

/* ----- Tablet (769px - 1024px) ----- */
@media (min-width: 769px) and (max-width: 1024px) {
    .vihargen-registration-wrapper {
        padding: 36px 32px 32px;
        max-width: 580px;
        margin: 30px auto;
    }
    
    .vihargen-header h2 {
        font-size: 30px;
    }
    
    .vihargen-form-group input,
    .vihargen-form-group select,
    .vihargen-form-group textarea {
        padding: 12px 15px;
    }
}

/* ----- Desktop (1025px and above) ----- */
@media (min-width: 1025px) {
    .vihargen-registration-wrapper {
        padding: 50px 48px 44px;
        max-width: 660px;
        margin: 50px auto;
    }
    
    .vihargen-header h2 {
        font-size: 36px;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .vihargen-registration-wrapper {
        background: #fff !important;
        box-shadow: none !important;
        border: 1px solid #ddd;
        padding: 30px;
        margin: 20px auto;
    }
    
    .vihargen-registration-wrapper::before,
    .vihargen-registration-wrapper::after {
        display: none !important;
    }
    
    #registerBtn,
    .toggle-password,
    .vihargen-social-login,
    .vihargen-login-email-section,
    .vihargen-dark-mode-toggle {
        display: none !important;
    }
    
    .vihargen-header h2 {
        -webkit-text-fill-color: #1a1a2e !important;
        background: none !important;
        color: #1a1a2e !important;
    }
    
    .vihargen-form-group input,
    .vihargen-form-group select,
    .vihargen-form-group textarea {
        border: 1px solid #ddd !important;
        background: #fff !important;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.vihargen-hidden {
    display: none !important;
}

.vihargen-text-center {
    text-align: center;
}

.vihargen-text-muted {
    color: var(--text-muted);
    font-size: 13px;
}

.vihargen-mt-10 {
    margin-top: 10px;
}

.vihargen-mb-10 {
    margin-bottom: 10px;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes vihargenFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.vihargen-registration-wrapper {
    animation: vihargenFadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes vihargenPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.4);
    }
    70% {
        box-shadow: 0 0 0 12px rgba(102, 126, 234, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0);
    }
}

#registerBtn:focus:not(:disabled) {
    animation: vihargenPulse 1.5s infinite;
}

/* ============================================
   FIX FOR iOS INPUT STYLING
   ============================================ */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
input[type="url"],
select,
textarea {
    -webkit-appearance: none;
    appearance: none;
}

input[type="checkbox"] {
    -webkit-appearance: checkbox;
    appearance: checkbox;
}

/* ============================================
   FIX FOR AUTO-FILL STYLES
   ============================================ */
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active,
textarea:-webkit-autofill,
textarea:-webkit-autofill:hover,
textarea:-webkit-autofill:focus,
select:-webkit-autofill,
select:-webkit-autofill:hover,
select:-webkit-autofill:focus {
    -webkit-box-shadow: 0 0 0 1000px var(--input-bg) inset !important;
    box-shadow: 0 0 0 1000px var(--input-bg) inset !important;
    border-color: var(--primary-color) !important;
    background-color: var(--input-bg) !important;
    color: var(--text-primary) !important;
}

html[data-theme="dark"] input:-webkit-autofill,
html[data-theme="dark"] input:-webkit-autofill:hover,
html[data-theme="dark"] input:-webkit-autofill:focus,
html[data-theme="dark"] input:-webkit-autofill:active,
body.dark-mode input:-webkit-autofill,
body.dark-mode input:-webkit-autofill:hover,
body.dark-mode input:-webkit-autofill:focus,
body.dark-mode input:-webkit-autofill:active {
    -webkit-box-shadow: 0 0 0 1000px #22223a inset !important;
    box-shadow: 0 0 0 1000px #22223a inset !important;
    -webkit-text-fill-color: #e8e8f0 !important;
    color: #e8e8f0 !important;
}

/* ============================================
   ADDITIONAL SOCIAL BUTTON STYLES
   ============================================ */
.vihargen-social-login .social-buttons {
    padding: 0;
}

.vihargen-social-login .social-buttons iframe {
    max-width: 100% !important;
}

/* Google Button hover effect */
#google-signin-button:hover {
    opacity: 0.97;
}

/* Fix for Google Button alignment */
#google-signin-button .gsi-material-button {
    min-height: 44px !important;
    border-radius: var(--radius-sm) !important;
    box-shadow: var(--shadow-sm) !important;
    transition: var(--transition) !important;
}

#google-signin-button .gsi-material-button:hover {
    box-shadow: var(--shadow-md) !important;
}

/* Scroll to top of form on error */
.error-scroll {
    scroll-margin-top: 20px;
}

/* FIX: Ensure Google button container is visible */
#google-signin-button {
    min-height: 44px;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

#google-signin-button > div {
    width: 100% !important;
    max-width: 340px !important;
    min-height: 44px !important;
}

#google-signin-button iframe {
    width: 100% !important;
    min-height: 44px !important;
    border-radius: 8px !important;
}

/* FIX: Google button fallback styles */
#google-signin-button .gsi-material-button {
    min-height: 44px !important;
    border-radius: 8px !important;
    width: 100% !important;
    max-width: 340px !important;
}

/* ============================================
   DARK MODE SCROLLBAR STYLING
   ============================================ */
html[data-theme="dark"] ::-webkit-scrollbar,
body.dark-mode ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

html[data-theme="dark"] ::-webkit-scrollbar-track,
body.dark-mode ::-webkit-scrollbar-track {
    background: var(--bg-light);
    border-radius: 5px;
}

html[data-theme="dark"] ::-webkit-scrollbar-thumb,
body.dark-mode ::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

html[data-theme="dark"] ::-webkit-scrollbar-thumb:hover,
body.dark-mode ::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ============================================
   DARK MODE SELECTION COLOR
   ============================================ */
html[data-theme="dark"] ::selection,
body.dark-mode ::selection {
    background: var(--primary-color);
    color: #fff;
}

/* ============================================
   DARK MODE FORM ELEMENTS ENHANCEMENT
   ============================================ */
html[data-theme="dark"] .vihargen-form-group input[type="number"]::-webkit-inner-spin-button,
html[data-theme="dark"] .vihargen-form-group input[type="number"]::-webkit-outer-spin-button,
body.dark-mode .vihargen-form-group input[type="number"]::-webkit-inner-spin-button,
body.dark-mode .vihargen-form-group input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

html[data-theme="dark"] .vihargen-form-group input[type="number"],
body.dark-mode .vihargen-form-group input[type="number"] {
    -moz-appearance: textfield;
}

/* ============================================
   DARK MODE GOOGLE BUTTON FIX
   ============================================ */
html[data-theme="dark"] #google-signin-button,
body.dark-mode #google-signin-button {
    background: transparent;
}

html[data-theme="dark"] #google-signin-button .gsi-material-button,
body.dark-mode #google-signin-button .gsi-material-button {
    background: #2a2a42 !important;
    border: 1px solid #3d3d5a !important;
}

html[data-theme="dark"] #google-signin-button .gsi-material-button .gsi-material-button-content-wrapper,
body.dark-mode #google-signin-button .gsi-material-button .gsi-material-button-content-wrapper {
    color: #e8e8f0 !important;
}

html[data-theme="dark"] #google-signin-button .gsi-material-button .gsi-material-button-icon,
body.dark-mode #google-signin-button .gsi-material-button .gsi-material-button-icon {
    filter: brightness(0.9);
}

/* ============================================
   DARK MODE TOGGLE POSITIONING
   ============================================ */
.vihargen-dark-mode-toggle-wrapper {
    text-align: center;
    margin-bottom: 20px;
}

html[data-theme="dark"] .vihargen-dark-mode-toggle,
body.dark-mode .vihargen-dark-mode-toggle {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

html[data-theme="dark"] .vihargen-dark-mode-toggle:hover,
body.dark-mode .vihargen-dark-mode-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}