/* ============================================
   LOGIN PAGE STYLES
   Universidad Politécnica Digital
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&display=swap');

:root {
    --upd-blue: #2B5EA7;
    --upd-blue-dark: #1A3A6C;
    --upd-blue-deeper: #0F2447;
    --upd-blue-light: #4A7EC7;
    --upd-gold: #C9A84C;
    --upd-gold-light: #E0CB7E;
    --upd-gold-dark: #9A7E2E;
    --white: #FFFFFF;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-800: #1E293B;
    --error: #EF4444;
    --success: #10B981;
    --font-sans: 'Inter', -apple-system, sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    --transition-base: 300ms ease;
}

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

body {
    font-family: var(--font-sans);
    min-height: 100vh;
    overflow: hidden;
}

/* ── Full page layout ── */
.login-page {
    display: flex;
    min-height: 100vh;
}

/* ── Left panel — animated visual ── */
.login-visual {
    flex: 1;
    background: linear-gradient(135deg, var(--upd-blue-deeper) 0%, var(--upd-blue-dark) 40%, var(--upd-blue) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    position: relative;
    overflow: hidden;
}

.login-visual::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(circle at 30% 70%, rgba(201, 168, 76, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(74, 126, 199, 0.1) 0%, transparent 50%);
    animation: visual-rotate 40s linear infinite;
}

@keyframes visual-rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* Animated campus illustration */
.campus-illustration {
    position: relative;
    z-index: 1;
    width: 400px;
    height: 350px;
}

.campus-illustration svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.3));
}

.visual-title {
    position: relative;
    z-index: 1;
    text-align: center;
    margin-top: 2rem;
}

.visual-title h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.visual-title p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 1rem;
    max-width: 350px;
    line-height: 1.6;
}

/* Floating elements */
.floating-element {
    position: absolute;
    border-radius: 50%;
    z-index: 0;
}

.float-1 {
    width: 120px;
    height: 120px;
    background: rgba(201, 168, 76, 0.08);
    top: 10%;
    left: 10%;
    animation: float 8s ease-in-out infinite;
}

.float-2 {
    width: 80px;
    height: 80px;
    background: rgba(74, 126, 199, 0.1);
    bottom: 15%;
    right: 15%;
    animation: float 6s ease-in-out infinite reverse;
}

.float-3 {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.04);
    top: 60%;
    left: 8%;
    animation: float 10s ease-in-out infinite 2s;
}

@keyframes float {

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

    50% {
        transform: translateY(-20px) scale(1.05);
    }
}

/* ── Right panel — login form ── */
.login-form-panel {
    flex: 0 0 520px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    background: var(--white);
    position: relative;
}

.login-back {
    position: absolute;
    top: 2rem;
    left: 2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-500);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: color var(--transition-base);
}

.login-back:hover {
    color: var(--upd-blue);
}

.login-form-wrapper {
    width: 100%;
    max-width: 380px;
}

.login-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 2.5rem;
}

.login-logo svg {
    width: 70px;
    height: 70px;
    margin-bottom: 1rem;
}

.login-logo h1 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--upd-blue-dark);
    text-align: center;
    line-height: 1.3;
}

.login-logo span {
    font-size: 0.75rem;
    color: var(--upd-gold);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    margin-top: 0.3rem;
    font-weight: 500;
}

.login-welcome {
    text-align: center;
    margin-bottom: 2rem;
}

.login-welcome h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 0.4rem;
}

.login-welcome p {
    font-size: 0.9rem;
    color: var(--gray-500);
}

/* Form */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    position: relative;
}

.form-group input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid #E2E8F0;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-family: var(--font-sans);
    color: var(--gray-800);
    background: #F8FAFC;
    transition: all var(--transition-base);
    outline: none;
}

.form-group input:focus {
    border-color: var(--upd-blue);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(43, 94, 167, 0.1);
}

.form-group input.error {
    border-color: var(--error);
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

.form-group .input-icon {
    position: absolute;
    top: 50%;
    left: 1rem;
    transform: translateY(-50%);
    color: var(--gray-400);
    transition: color var(--transition-base);
    pointer-events: none;
}

.form-group input:focus+.input-icon {
    color: var(--upd-blue);
}

.form-group label {
    position: absolute;
    top: 50%;
    left: 3rem;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 0.95rem;
    pointer-events: none;
    transition: all 0.2s ease;
}

.form-group input:focus~label,
.form-group input:not(:placeholder-shown)~label {
    top: -0.5rem;
    left: 0.8rem;
    font-size: 0.75rem;
    color: var(--upd-blue);
    background: var(--white);
    padding: 0 0.3rem;
    font-weight: 600;
}

.form-error {
    font-size: 0.8rem;
    color: var(--error);
    margin-top: 0.3rem;
    display: none;
    align-items: center;
    gap: 0.3rem;
}

.form-error.visible {
    display: flex;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--gray-600);
}

.remember-me input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--upd-blue);
}

.forgot-password {
    color: var(--upd-blue);
    font-weight: 600;
    text-decoration: none;
}

.forgot-password:hover {
    text-decoration: underline;
}

.login-button {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--upd-blue), var(--upd-blue-dark));
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 700;
    font-family: var(--font-sans);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.login-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(43, 94, 167, 0.4);
}

.login-button:active {
    transform: translateY(0);
}

.login-button.loading {
    pointer-events: none;
    opacity: 0.85;
}

.login-button .spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.login-button.loading .spinner {
    display: block;
}

.login-button.loading .btn-text {
    display: none;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.login-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0.5rem 0;
    color: var(--gray-400);
    font-size: 0.8rem;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: #E2E8F0;
}

.login-help {
    text-align: center;
    font-size: 0.85rem;
    color: var(--gray-500);
}

.login-help a {
    color: var(--upd-blue);
    font-weight: 600;
    text-decoration: none;
}

.login-help a:hover {
    text-decoration: underline;
}

/* Alert toast */
.login-alert {
    position: fixed;
    top: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.4s ease;
    z-index: 9999;
}

.login-alert.show {
    opacity: 1;
    transform: translateX(0);
}

.login-alert.error {
    background: #FEF2F2;
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.login-alert.success {
    background: #F0FDF4;
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
    .login-visual {
        display: none;
    }

    .login-form-panel {
        flex: 1;
        background: linear-gradient(180deg, #F8FAFC 0%, var(--white) 100%);
    }
}

@media (max-width: 480px) {
    .login-form-panel {
        padding: 2rem 1.5rem;
    }

    .login-form-wrapper {
        max-width: 100%;
    }
}