/* ============================================
   SCRIBBITER DESIGN SYSTEM v2.0
   Modern Tech + Creative Hybrid
   ============================================ */

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

:root {
    /* ============================================
       COLOR SYSTEM
       ============================================ */

    /* Primary - Deep Purple */
    --color-primary-dark: #21153D;
    --color-primary-medium: #675B8C;
    --color-primary-light: #F5F3FA;
    --color-primary-lighter: #EDE9F5;

    /* Accent - Teal */
    --color-accent: #00BFA5;
    --color-accent-hover: #00A892;
    --color-accent-glow: rgba(0, 191, 165, 0.2);
    --color-accent-glow-strong: rgba(0, 191, 165, 0.4);

    /* Neutrals */
    --color-white: #FFFFFF;
    --color-off-white: #F8F9FA;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-900: #111827;

    /* Text Colors */
    --color-text-primary: #111827;
    --color-text-secondary: #6B7280;
    --color-text-muted: #9CA3AF;
    --color-text-on-dark: #FFFFFF;
    --color-text-on-dark-muted: rgba(255, 255, 255, 0.7);

    /* Status Colors */
    --color-success: #10B981;
    --color-error: #EF4444;

    /* ============================================
       TYPOGRAPHY
       ============================================ */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 2rem;      /* 32px */
    --font-size-4xl: 2.5rem;    /* 40px */
    --font-size-5xl: 3rem;      /* 48px */

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.1;
    --line-height-snug: 1.3;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.6;

    --letter-spacing-tight: -0.02em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.01em;

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

    /* ============================================
       BORDERS & RADIUS
       ============================================ */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    --border-width: 1px;
    --border-color: var(--color-gray-200);

    /* ============================================
       SHADOWS
       ============================================ */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
    --shadow-xl: 0 20px 40px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 4px 20px var(--color-accent-glow-strong);

    /* ============================================
       TRANSITIONS
       ============================================ */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;

    /* ============================================
       LAYOUT
       ============================================ */
    --max-width: 1100px;
    --max-width-narrow: 700px;
    --max-width-wide: 1200px;
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-primary);
    background-color: var(--color-white);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input {
    font-family: inherit;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

.container-narrow {
    max-width: var(--max-width-narrow);
}

.container-wide {
    max-width: var(--max-width-wide);
}

.text-center {
    text-align: center;
}

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

/* ============================================
   TYPOGRAPHY CLASSES
   ============================================ */
.heading-1 {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-text-on-dark);
}

.heading-2 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-snug);
    color: var(--color-primary-dark);
}

.heading-3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-snug);
    color: var(--color-primary-dark);
}

.text-large {
    font-size: var(--font-size-xl);
    line-height: var(--line-height-relaxed);
}

.text-body {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
}

.text-small {
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
}

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

/* ============================================
   BUTTON STYLES
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary-dark);
    border: var(--border-width) solid var(--color-primary-dark);
}

.btn-secondary:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
}

.btn-large {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ============================================
   FORM STYLES
   ============================================ */
.input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background-color: var(--color-white);
    border: var(--border-width) solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

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

.input-dark {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
}

.input-dark::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.input-dark:focus {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: var(--color-accent);
}

/* Inline form layout */
.form-inline {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.form-inline .input {
    flex: 1;
    min-width: 200px;
}

/* Honeypot (anti-bot) */
.honeypot {
    position: absolute !important;
    left: -9999px !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

/* ============================================
   MESSAGE STYLES
   ============================================ */
.message {
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-align: center;
    display: none;
}

.message.active {
    display: block;
}

.message.success {
    background-color: var(--color-success);
    color: var(--color-white);
}

.message.error {
    background-color: var(--color-error);
    color: var(--color-white);
}

/* Fixed notification */
.notification {
    position: fixed;
    top: var(--spacing-6);
    right: var(--spacing-6);
    z-index: 1000;
    min-width: 300px;
    max-width: 400px;
    animation: slideIn var(--transition-slow) ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================
   CARD STYLES
   ============================================ */
.card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-8);
    transition: all var(--transition-normal);
}

.card-bordered {
    border: var(--border-width) solid var(--color-gray-200);
}

.card-bordered:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-elevated {
    box-shadow: var(--shadow-lg);
}

/* ============================================
   SECTION STYLES
   ============================================ */
.section {
    padding: var(--spacing-24) 0;
}

.section-sm {
    padding: var(--spacing-16) 0;
}

.section-lg {
    padding: var(--spacing-32) 0;
}

.section-dark {
    background-color: var(--color-primary-dark);
    color: var(--color-text-on-dark);
}

.section-light {
    background-color: var(--color-off-white);
}

.section-gradient {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary-lighter) 100%);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-12);
}

.section-header .heading-2 {
    margin-bottom: var(--spacing-4);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   GRID LAYOUTS
   ============================================ */
.grid {
    display: grid;
    gap: var(--spacing-6);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   ICON STYLES
   ============================================ */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.icon-sm {
    width: 20px;
    height: 20px;
}

.icon-md {
    width: 32px;
    height: 32px;
}

.icon-lg {
    width: 48px;
    height: 48px;
}

.icon-accent {
    color: var(--color-accent);
}

/* ============================================
   LINK STYLES
   ============================================ */
.link {
    color: var(--color-accent);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.link:hover {
    text-decoration: underline;
    text-underline-offset: 4px;
}

.link-subtle {
    color: var(--color-text-secondary);
}

.link-subtle:hover {
    color: var(--color-text-primary);
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
    }

    .container {
        padding: 0 var(--spacing-4);
    }

    .section {
        padding: var(--spacing-16) 0;
    }

    .hide-mobile {
        display: none !important;
    }
}

@media (min-width: 769px) {
    .hide-desktop {
        display: none !important;
    }
}