/* ============================================================================
   Theme Day Planer - Design Tokens
   Brand: Professional x Calm x Creative
   ============================================================================ */

:root {
    /* ========================================================================
       Brand Colors
       ======================================================================== */

    /* Primary Colors */
    --midnight-navy: #0F172A;
    --electric-purple: #7C3AED;
    --electric-purple-hover: #8B5CF6;
    --electric-purple-muted: rgba(124, 58, 237, 0.15);
    --neon-cyan: #22D3EE;

    /* Slate Scale (for backgrounds, text, borders) */
    --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: #0B1120;

    /* Semantic Colors */
    --color-success: #22C55E;
    --color-success-muted: rgba(34, 197, 94, 0.15);
    --color-warning: #EAB308;
    --color-warning-muted: rgba(234, 179, 8, 0.15);
    --color-danger: #EF4444;
    --color-danger-muted: rgba(239, 68, 68, 0.15);
    --color-info: var(--neon-cyan);
    --color-info-muted: rgba(34, 211, 238, 0.15);

    /* ========================================================================
       Semantic Mappings
       ======================================================================== */

    /* Backgrounds */
    --bg-primary: var(--midnight-navy);
    --bg-secondary: var(--slate-950);
    --bg-tertiary: var(--slate-800);
    --bg-elevated: var(--slate-700);
    --bg-hover: rgba(255, 255, 255, 0.05);
    --bg-card: rgba(30, 41, 59, 0.5);

    /* Text */
    --text-primary: #FFFFFF;
    --text-secondary: var(--slate-400);
    --text-tertiary: var(--slate-500);
    --text-muted: var(--slate-600);
    --text-inverse: var(--slate-900);

    /* Borders */
    --border-subtle: rgba(148, 163, 184, 0.1);
    --border-default: rgba(148, 163, 184, 0.2);
    --border-strong: rgba(148, 163, 184, 0.3);

    /* Accents */
    --accent-primary: var(--electric-purple);
    --accent-primary-hover: var(--electric-purple-hover);
    --accent-secondary: var(--neon-cyan);

    /* ========================================================================
       Gradients
       ======================================================================== */

    --gradient-primary: linear-gradient(135deg, var(--electric-purple), #9333EA);
    --gradient-subtle: linear-gradient(180deg, rgba(124, 58, 237, 0.1), transparent);
    --gradient-glow: radial-gradient(ellipse at center, rgba(124, 58, 237, 0.15) 0%, transparent 70%);

    /* ========================================================================
       Typography
       ======================================================================== */

    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', var(--font-primary);
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

    /* ========================================================================
       Spacing
       ======================================================================== */

    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */
    --space-32: 8rem;     /* 128px */

    /* ========================================================================
       Border Radius
       ======================================================================== */

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* ========================================================================
       Shadows
       ======================================================================== */

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.3);
    --shadow-glow-strong: 0 4px 12px rgba(124, 58, 237, 0.4);

    /* ========================================================================
       Transitions
       ======================================================================== */

    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

/* ============================================================================
   Base Resets
   ============================================================================ */

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

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* ============================================================================
   Typography Base
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 1.875rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

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

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* ============================================================================
   Shared Components
   ============================================================================ */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--electric-purple);
    color: var(--text-primary);
}

.btn-primary:hover {
    background: var(--electric-purple-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow-strong);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--border-default);
}

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

.btn-ghost:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-danger {
    background: transparent;
    border: 1px solid var(--color-danger);
    color: var(--color-danger);
}

.btn-danger:hover {
    background: var(--color-danger);
    color: #fff;
}

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: 1rem;
}

.btn-full {
    width: 100%;
}

.btn-arrow {
    transition: transform var(--transition-fast);
    font-size: 1.1em;
}

.btn:hover .btn-arrow {
    transform: translateX(3px);
}

/* Logo */
.logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--electric-purple);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-text {
    letter-spacing: -0.02em;
}

/* Form Elements */
.form-group {
    margin-bottom: var(--space-5);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--electric-purple-muted);
}

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

.form-error {
    color: var(--color-danger);
    font-size: 0.875rem;
    margin-bottom: var(--space-4);
    min-height: 1.25rem;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.card:hover {
    border-color: rgba(124, 58, 237, 0.3);
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    text-transform: capitalize;
}

.status-badge.success {
    color: var(--color-success);
    background: var(--color-success-muted);
}

.status-badge.warning {
    color: var(--color-warning);
    background: var(--color-warning-muted);
}

.status-badge.danger {
    color: var(--color-danger);
    background: var(--color-danger-muted);
}

.status-badge.info {
    color: var(--neon-cyan);
    background: var(--color-info-muted);
}

.status-badge.default {
    color: var(--text-secondary);
    background: rgba(148, 163, 184, 0.15);
}

/* Gradient Text */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Highlight Text */
.highlight {
    color: var(--neon-cyan);
}