/* ========================================
   FNT Rapor Sistemi — Login Page Styles
   ======================================== */

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

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --accent: #06b6d4;
    --accent-dark: #0891b2;
    --surface: rgba(255, 255, 255, 0.08);
    --surface-hover: rgba(255, 255, 255, 0.12);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --danger-border: rgba(239, 68, 68, 0.3);
    --success: #22c55e;
    --success-bg: rgba(34, 197, 94, 0.12);
    --success-border: rgba(34, 197, 94, 0.3);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.12);
    --warning-border: rgba(245, 158, 11, 0.3);
    --bg-gradient-1: #0f0c29;
    --bg-gradient-2: #1a1145;
    --bg-gradient-3: #24243e;
    --border-color: rgba(255, 255, 255, 0.08);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-1) 0%, var(--bg-gradient-2) 50%, var(--bg-gradient-3) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

/* ===== Animated Background Orbs ===== */
.bg-orbs {
    position: fixed;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
    z-index: 0;
}

.bg-orbs .orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: orbFloat 20s ease-in-out infinite;
}

.bg-orbs .orb:nth-child(1) {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -10%;
    left: -5%;
    animation-delay: 0s;
    animation-duration: 25s;
}

.bg-orbs .orb:nth-child(2) {
    width: 350px;
    height: 350px;
    background: var(--accent);
    top: 50%;
    right: -10%;
    animation-delay: -5s;
    animation-duration: 30s;
}

.bg-orbs .orb:nth-child(3) {
    width: 300px;
    height: 300px;
    background: #a855f7;
    bottom: -15%;
    left: 30%;
    animation-delay: -10s;
    animation-duration: 22s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(50px, -60px) scale(1.1); }
    50% { transform: translate(-30px, 40px) scale(0.95); }
    75% { transform: translate(40px, 20px) scale(1.05); }
}

/* ===== Login Container ===== */
.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 440px;
    padding: 20px;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Login Card (Glassmorphism) ===== */
.login-card {
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 48px 40px;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transition: var(--transition);
}

.login-card:hover {
    border-color: rgba(99, 102, 241, 0.2);
    box-shadow: var(--shadow-lg), 0 0 60px rgba(99, 102, 241, 0.2);
}

/* ===== Logo & Header ===== */
.login-header {
    text-align: center;
    margin-bottom: 36px;
}

.login-logo {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.3);
    animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% { box-shadow: 0 8px 30px rgba(99, 102, 241, 0.3); }
    50% { box-shadow: 0 8px 40px rgba(99, 102, 241, 0.5); }
}

.login-logo svg {
    width: 32px;
    height: 32px;
    fill: white;
}

.login-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.02em;
}

.login-header p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* ===== Alert Messages ===== */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: alertSlideIn 0.4s ease-out;
    line-height: 1.5;
}

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

.alert-danger {
    background: var(--danger-bg);
    border: 1px solid var(--danger-border);
    color: #fca5a5;
}

.alert-success {
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    color: #86efac;
}

.alert-warning {
    background: var(--warning-bg);
    border: 1px solid var(--warning-border);
    color: #fcd34d;
}

.alert-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

/* ===== Form Styles ===== */
.form-group {
    margin-bottom: 22px;
    position: relative;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.input-wrapper {
    position: relative;
}

.input-wrapper .input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--text-muted);
    transition: var(--transition);
    pointer-events: none;
}

.form-control {
    width: 100%;
    padding: 14px 16px 14px 48px;
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    font-weight: 400;
    outline: none;
    transition: var(--transition);
}

.form-control::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.form-control:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: var(--surface-hover);
}

.form-control:focus {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.06);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-control:focus + .input-icon,
.form-control:focus ~ .input-icon {
    color: var(--primary-light);
}

/* Password Toggle */
.password-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-toggle:hover {
    color: var(--text-secondary);
}

.password-toggle svg {
    width: 18px;
    height: 18px;
}

/* ===== Submit Button ===== */
.btn-login {
    width: 100%;
    padding: 15px 24px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.01em;
}

.btn-login::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(99, 102, 241, 0.4);
}

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

.btn-login span {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.btn-login:disabled:hover {
    box-shadow: none;
}

.btn-login:disabled::before {
    opacity: 0;
}

/* Loading Spinner */
.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    display: none;
}

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

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

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

/* ===== Footer ===== */
.login-footer {
    text-align: center;
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.login-footer p {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 400;
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
    .login-card {
        padding: 36px 24px;
    }

    .login-header h1 {
        font-size: 1.4rem;
    }
}

/* ===== Focus Visible ===== */
.form-control:focus-visible,
.btn-login:focus-visible,
.password-toggle:focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}