/* ==========================================================================
   Pharwatch — Design Tokens & Base Styles
   ========================================================================== */

:root {
    /* Core brand */
    --color-primary: #1b2040;
    --color-secondary: #ef4444;
    --color-secondary-hover: #dc2626;
    --color-accent: #f87171;

    /* Surfaces */
    --color-background: #f7f8fa;
    --color-surface: #ffffff;
    --color-surface-raised: #ffffff;
    --color-border: #e2e5ea;
    --color-border-subtle: #eef0f3;

    /* Text */
    --color-text: #1b2040;
    --color-text-secondary: #4a5068;
    --color-text-muted: #8b92a5;
    --color-text-inverse: #ffffff;

    /* Semantic — status */
    --color-success: #059669;
    --color-success-light: #ecfdf5;
    --color-warning: #d97706;
    --color-warning-light: #fffbeb;
    --color-error: #dc2626;
    --color-error-light: #fef2f2;
    --color-info: #2563eb;
    --color-info-light: #eff6ff;

    /* Domain — change tracking */
    --color-added: #059669;
    --color-added-bg: #ecfdf5;
    --color-removed: #dc2626;
    --color-removed-bg: #fef2f2;
    --color-changed: #d97706;
    --color-changed-bg: #fffbeb;

    /* Navigation */
    --color-menubar: #1b2040;
    --color-menubar-hover: #2d3358;
    --color-menubar-text: #cbd5e1;
    --color-menubar-text-active: #ffffff;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

/* ==========================================================================
   Reset
   ========================================================================== */

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

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

body {
    font-family: 'Gotham Rounded', 'Nunito', system-ui, sans-serif;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-background);
}

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

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

a:hover {
    color: var(--color-secondary-hover);
}

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

h1, h2, h3, h4 {
    line-height: 1.2;
    letter-spacing: -0.01em;
    font-weight: 700;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.125rem; font-weight: 500; }

@media (min-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.5;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.button-primary {
    background-color: var(--color-secondary);
    color: var(--color-text-inverse);
    border-color: var(--color-secondary);
}

.button-primary:hover {
    background-color: var(--color-secondary-hover);
    border-color: var(--color-secondary-hover);
    color: var(--color-text-inverse);
}

.button-outline {
    background-color: transparent;
    color: var(--color-text-inverse);
    border-color: rgba(255, 255, 255, 0.4);
}

.button-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.7);
    color: var(--color-text-inverse);
}

.button-outline-dark {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-border);
}

.button-outline-dark:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
}