/* assets/css/style.css */
/*
 * Aurora Interface System
 * Clean enterprise theme for login + dashboard shell
 */

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

:root {
    /* Base palette */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    --slate-25: #fbfdff;
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --slate-950: #020617;

    --success: #16a34a;
    --warning: #f59e0b;
    --error: #dc2626;
    --info: #2563eb;

    --surface-base: var(--slate-50);
    --surface-raised: #ffffff;
    --surface-alt: #f4f6fb;
    --surface-muted: rgba(59, 130, 246, 0.05);

    --text-primary: var(--slate-900);
    --text-secondary: var(--slate-600);
    --text-tertiary: var(--slate-400);

    --border-color: var(--slate-200);
    --border-soft: rgba(100, 116, 139, 0.16);
    --border-strong: rgba(30, 64, 175, 0.35);

    --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
    --shadow-sm: 0 6px 12px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 15px 30px rgba(15, 23, 42, 0.10);
    --shadow-lg: 0 25px 45px rgba(15, 23, 42, 0.14);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 26px;
    --radius-pill: 999px;

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;

    --header-height: 80px;
    --sidebar-width: 280px;
    --container-width: 1180px;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --transition-snappy: 200ms cubic-bezier(0.22, 1, 0.36, 1);
    --transition-slow: 320ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
    --surface-base: #050b18;
    --surface-raised: #101c2f;
    --surface-alt: rgba(15, 23, 42, 0.85);
    --surface-muted: rgba(59, 130, 246, 0.08);

    --text-primary: var(--slate-100);
    --text-secondary: var(--slate-400);
    --text-tertiary: rgba(148, 163, 184, 0.65);

    --border-color: rgba(51, 65, 85, 0.7);
    --border-soft: rgba(100, 116, 139, 0.25);
    --border-strong: rgba(93, 135, 255, 0.45);

    --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.25);
    --shadow-sm: 0 6px 20px rgba(8, 27, 63, 0.25);
    --shadow-md: 0 18px 40px rgba(7, 20, 45, 0.35);
    --shadow-lg: 0 25px 55px rgba(5, 17, 40, 0.45);
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    min-height: 100%;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.6;
    background: var(--surface-base);
    color: var(--text-primary);
    transition: background 0.3s ease, color 0.3s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, svg {
    display: block;
    max-width: 100%;
}

button, input, textarea, select {
    font: inherit;
    color: inherit;
}

button {
    border: none;
    background: none;
    cursor: pointer;
}

a {
    color: var(--primary-600);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--primary-700);
}

::selection {
    background: rgba(59, 130, 246, 0.25);
    color: inherit;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

p {
    margin: 0;
    color: var(--text-secondary);
}

small {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    line-height: 1;
    letter-spacing: -0.01em;
    transition: transform var(--transition-snappy), box-shadow var(--transition-snappy), background var(--transition-snappy), color var(--transition-snappy);
    background: var(--surface-muted);
    color: var(--text-primary);
    border: 1px solid transparent;
}

.btn i {
    font-size: 0.95em;
}

.btn:focus-visible {
    outline: 3px solid rgba(59, 130, 246, 0.35);
    outline-offset: 2px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: #ffffff;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-outline:hover {
    border-color: var(--primary-500);
    color: var(--primary-600);
    box-shadow: var(--shadow-xs);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: rgba(148, 163, 184, 0.12);
}

.btn-sm {
    padding: 0.55rem 1.1rem;
    font-size: 0.85rem;
}

.btn-loading {
    cursor: progress;
    opacity: 0.8;
}

/* Form controls */
label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.45rem;
}

input,
textarea,
select {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--surface-raised);
    transition: border var(--transition-snappy), box-shadow var(--transition-snappy), background var(--transition-snappy);
}

input:hover,
textarea:hover,
select:hover {
    border-color: var(--border-soft);
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
    outline: none;
}

input::placeholder,
textarea::placeholder {
    color: var(--text-tertiary);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

input[type="color"] {
    height: 48px;
    padding: 0.2rem;
}

.form-helper {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.8rem;
}

/* Alerts */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.85rem 1.1rem;
    border-radius: var(--radius-md);
    border-left: 4px solid currentColor;
    background: var(--surface-raised);
    color: var(--text-secondary);
    box-shadow: var(--shadow-xs);
    animation: fadeSlideIn 220ms ease;
}

.alert i {
    font-size: 1.1rem;
    margin-top: 0.1rem;
}

.alert-success {
    color: var(--success);
    border-left-color: var(--success);
}

.alert-error {
    color: var(--error);
    border-left-color: var(--error);
}

.alert-warning {
    color: var(--warning);
    border-left-color: var(--warning);
}

.alert-info {
    color: var(--info);
    border-left-color: var(--info);
}

.notification-toast {
    max-width: 380px;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 9px;
}

::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.45);
    border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(100, 116, 139, 0.7);
}

/* Login screen */
.login-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-8);
    background: radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.18), transparent 55%),
                radial-gradient(circle at 80% 0%, rgba(30, 64, 175, 0.18), transparent 45%),
                linear-gradient(150deg, #eef2ff 0%, #f8fafc 100%);
    position: relative;
    overflow: hidden;
}

.login-body::before,
.login-body::after {
    content: '';
    position: absolute;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: radial-gradient(circle at center, rgba(59, 130, 246, 0.22), transparent 65%);
    filter: blur(4px);
    opacity: 0.36;
    animation: driftGlow 16s ease-in-out infinite;
    pointer-events: none;
    mix-blend-mode: screen;
}

.login-body::before {
    top: -18%;
    left: -12%;
}

.login-body::after {
    bottom: -20%;
    right: -10%;
    animation-delay: -8s;
}

[data-theme="dark"] .login-body {
    background: radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.25), transparent 55%),
                radial-gradient(circle at 75% 10%, rgba(30, 64, 175, 0.3), transparent 45%),
                linear-gradient(150deg, #050b18 0%, #0f172a 100%);
}

#particles-js {
    position: absolute;
    inset: 0;
    opacity: 0.5;
}

.login-container {
    position: relative;
    width: min(420px, 100%);
    z-index: 2;
}

.login-card {
    position: relative;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(25px);
    border-radius: var(--radius-xl);
    padding: var(--space-10);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.6);
    overflow: hidden;
}

.login-card::before,
.login-card::after {
    content: '';
    position: absolute;
    inset: 12% 18%;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.12), transparent 70%);
    opacity: 0;
    animation: cardSheen 7s ease-in-out infinite;
    pointer-events: none;
}

.login-card::after {
    inset: 30% 8% 12% 28%;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.15), transparent 72%);
    animation-delay: -3.5s;
}

[data-theme="dark"] .login-card {
    background: rgba(15, 23, 42, 0.85);
    border: 1px solid rgba(59, 130, 246, 0.15);
}

.login-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.login-header i {
    display: inline-flex;
    width: 64px;
    height: 64px;
    align-items: center;
    justify-content: center;
    border-radius: 18px;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    color: #fff;
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.25);
    margin-bottom: var(--space-4);
}

.login-header h1 {
    font-size: 1.8rem;
    margin-bottom: var(--space-2);
}

.login-header p {
    font-size: 0.95rem;
}

.login-form .btn {
    width: 100%;
}

.login-footer {
    text-align: center;
    margin-top: var(--space-6);
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

@media (max-width: 640px) {
    .login-body {
        padding: var(--space-4);
    }

    .login-card {
        padding: var(--space-8);
    }

    .btn {
        width: 100%;
    }
}

/* Motions */
@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes driftGlow {
    0%, 100% {
        transform: translate3d(0, 0, 0) scale(1);
        opacity: 0.28;
    }
    45% {
        transform: translate3d(18px, -12px, 0) scale(1.06);
        opacity: 0.42;
    }
    70% {
        transform: translate3d(-12px, 16px, 0) scale(0.96);
        opacity: 0.32;
    }
}

@keyframes cardSheen {
    0%, 100% {
        opacity: 0;
        transform: translateX(-12%) scale(1);
    }
    40% {
        opacity: 0.25;
        transform: translateX(6%) scale(1.02);
    }
    60% {
        opacity: 0.18;
        transform: translateX(18%) scale(0.98);
    }
}

@keyframes fadeOut {
    to {
        opacity: 0;
        transform: translateY(-12px);
    }
}