@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ============================================
   REGISTER PAGE — CampusConnect Unified Design
   ============================================ */
:root {
    --primary: #6C63FF;
    --primary-dark: #5A52D5;
    --primary-light: #8B83FF;
    --primary-glow: rgba(108, 99, 255, 0.35);
    --accent: #FF6B6B;
    --accent-glow: rgba(255, 107, 107, 0.3);
    --bg-deep: #0B0D17;
    --bg-dark: #111327;
    --bg-card: #1A1D35;
    --bg-glass-light: rgba(255, 255, 255, 0.04);
    --text-primary: #F0F0F8;
    --text-secondary: #A0A3BD;
    --text-muted: #6B6F8D;
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-active: rgba(108, 99, 255, 0.4);
    --gradient-hero: linear-gradient(135deg, #6C63FF 0%, #B24BF3 50%, #FF6B6B 100%);
    --gradient-btn: linear-gradient(135deg, #6C63FF 0%, #8B83FF 100%);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 50px;
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --error-color: #FF6B6B;
    --success-color: #4ECB71;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-deep);
    min-height: 100vh;
    line-height: 1.6;
    color: var(--text-primary);
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: '';
    position: fixed;
    top: -30%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    filter: blur(80px);
    animation: float 8s ease-in-out infinite;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    bottom: -20%;
    left: -15%;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    filter: blur(80px);
    animation: float 10s ease-in-out infinite reverse;
    z-index: 0;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -30px) scale(1.05);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.95);
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Main Content */
.main-content {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 24px;
    position: relative;
    z-index: 1;
}

/* Register Container */
.register-container {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
    padding: 40px;
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
    animation: cardFadeIn 0.6s var(--ease-smooth);
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.register-header {
    text-align: center;
    margin-bottom: 32px;
}

.register-header h1 {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.register-header p {
    color: var(--text-muted);
    font-size: 0.92rem;
}

/* Messages */
.messages {
    margin-bottom: 20px;
}

.alert {
    padding: 14px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(10px);
}

.alert i {
    font-size: 1rem;
}

.alert-success {
    background: rgba(78, 203, 113, 0.1);
    color: var(--success-color);
    border-color: rgba(78, 203, 113, 0.2);
}

.alert-error,
.alert-danger {
    background: rgba(255, 107, 107, 0.1);
    color: var(--error-color);
    border-color: rgba(255, 107, 107, 0.2);
}

.alert-warning {
    background: rgba(255, 193, 7, 0.1);
    color: #FFD54F;
    border-color: rgba(255, 193, 7, 0.2);
}

.alert-info {
    background: rgba(108, 99, 255, 0.1);
    color: var(--primary-light);
    border-color: rgba(108, 99, 255, 0.2);
}

/* Form */
.register-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.88rem;
    letter-spacing: 0.01em;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper i {
    position: absolute;
    left: 14px;
    color: var(--text-muted);
    font-size: 0.88rem;
    z-index: 2;
    pointer-events: none;
}

.input-wrapper input,
.input-wrapper select {
    width: 100%;
    padding: 14px 14px 14px 42px;
    background: var(--bg-glass-light);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    font-size: 0.92rem;
    color: var(--text-primary);
    font-family: inherit;
    transition: all 0.3s var(--ease-smooth);
    appearance: none;
}

.input-wrapper select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236B6F8D' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.input-wrapper select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.input-wrapper input:focus,
.input-wrapper select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
    background: rgba(255, 255, 255, 0.03);
}

.input-wrapper input::placeholder {
    color: var(--text-muted);
}

.toggle-password {
    position: absolute;
    right: 14px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    z-index: 2;
    transition: color 0.3s var(--ease-smooth);
    padding: 4px;
}

.toggle-password:hover {
    color: var(--primary-light);
}

/* Password Strength */
.password-strength {
    margin-top: 8px;
}

.strength-meter {
    height: 4px;
    border-radius: 2px;
    background-color: rgba(255, 255, 255, 0.06);
    margin-bottom: 4px;
    overflow: hidden;
    position: relative;
}

.strength-meter::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    transition: all 0.4s var(--ease-smooth);
    border-radius: 2px;
}

.strength-meter.weak::before {
    width: 25%;
    background: var(--error-color);
}

.strength-meter.fair::before {
    width: 50%;
    background: #FFD54F;
}

.strength-meter.good::before {
    width: 75%;
    background: #4ECB71;
}

.strength-meter.strong::before {
    width: 100%;
    background: linear-gradient(90deg, #4ECB71, #6C63FF);
}

.strength-text {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Error Messages */
.error-message {
    font-size: 0.75rem;
    color: var(--error-color);
    min-height: 1rem;
    display: none;
}

.error-message.show {
    display: block;
}

/* Terms */
.terms-group {
    margin-top: 4px;
}

.checkbox-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.checkbox-wrapper input[type="checkbox"] {
    width: auto;
    margin: 0;
    margin-top: 3px;
    transform: scale(1.15);
    accent-color: var(--primary);
    cursor: pointer;
}

.checkbox-wrapper label {
    font-size: 0.82rem;
    line-height: 1.5;
    margin: 0;
    color: var(--text-muted);
}

.checkbox-wrapper a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color 0.3s var(--ease-smooth);
}

.checkbox-wrapper a:hover {
    color: var(--accent);
}

/* Register Button */
.register-btn {
    background: var(--gradient-btn);
    color: #fff;
    border: none;
    padding: 15px;
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.35s var(--ease-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 8px;
    letter-spacing: 0.02em;
    box-shadow: 0 4px 20px var(--primary-glow);
    position: relative;
    overflow: hidden;
    font-family: inherit;
}

.register-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.35s var(--ease-smooth);
}

.register-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px var(--primary-glow);
}

.register-btn:hover::before {
    opacity: 1;
}

.register-btn:active {
    transform: translateY(0);
}

.register-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Login Link */
.login-link {
    text-align: center;
    margin-top: 20px;
    font-size: 0.88rem;
    color: var(--text-muted);
}

.login-link a {
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 700;
    transition: color 0.3s var(--ease-smooth);
}

.login-link a:hover {
    color: var(--accent);
}

/* Loading State */
.register-btn.loading {
    position: relative;
    color: transparent;
}

.register-btn.loading::after {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Responsive */
@media (min-width: 768px) {
    .register-container {
        padding: 48px 44px;
    }

    .form-row {
        grid-template-columns: 1fr 1fr;
    }

    .register-header h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .register-container {
        padding: 28px 20px;
        margin: 0 8px;
    }

    .register-header h1 {
        font-size: 1.5rem;
    }

    .register-btn {
        padding: 14px;
        font-size: 0.92rem;
    }
}

/* Focus styles for accessibility */
input:focus-visible,
select:focus-visible,
button:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}