/*
 * Gafree — Common Styles
 * Base reset, layout, utility classes.
 */

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--g-font-family);
    font-size: var(--g-font-size-md);
    line-height: var(--g-line-height);
    color: var(--g-text-primary);
    background: var(--g-bg-body);
    min-height: 100vh;
}

a {
    color: var(--g-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

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

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* =====================================================
   APP LAYOUT
   ===================================================== */
.g-app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.g-main {
    margin-left: var(--g-sidebar-width);
    margin-top: var(--g-header-height);
    padding: var(--g-spacing-lg);
    min-height: calc(100vh - var(--g-header-height));
    transition: margin-left var(--g-transition-slow);
}

@media (max-width: 768px) {
    .g-main {
        margin-left: 0;
        padding: var(--g-spacing-md);
    }
}

/* =====================================================
   TAB CONTENT (SPA pattern)
   ===================================================== */
.g-tab-content {
    display: none;
}

.g-tab-content.active {
    display: block;
    animation: g-fadeIn var(--g-transition-normal);
}

@keyframes g-fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* =====================================================
   CARDS
   ===================================================== */
.g-card {
    background: var(--g-bg-card);
    border: 1px solid var(--g-border-color);
    border-radius: var(--g-radius-lg);
    padding: var(--g-spacing-lg);
    box-shadow: var(--g-shadow-sm);
}

.g-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--g-spacing-md);
}

.g-card-title {
    font-size: var(--g-font-size-lg);
    font-weight: var(--g-font-weight-semibold);
    color: var(--g-text-primary);
}

/* =====================================================
   BUTTONS
   ===================================================== */
.g-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--g-spacing-xs);
    padding: var(--g-spacing-sm) var(--g-spacing-md);
    border: 1px solid transparent;
    border-radius: var(--g-radius-md);
    font-size: var(--g-font-size-sm);
    font-weight: var(--g-font-weight-medium);
    cursor: pointer;
    transition: all var(--g-transition-fast);
    white-space: nowrap;
    text-decoration: none;
}

.g-btn:hover { text-decoration: none; }

.g-btn-primary {
    background: var(--g-primary);
    color: var(--g-text-inverse);
}
.g-btn-primary:hover {
    background: var(--g-primary-dark);
}

.g-btn-secondary {
    background: var(--g-bg-card);
    color: var(--g-text-primary);
    border-color: var(--g-border-color);
}
.g-btn-secondary:hover {
    background: var(--g-bg-hover);
}

.g-btn-danger {
    background: var(--g-danger);
    color: var(--g-text-inverse);
}
.g-btn-danger:hover {
    background: #A83030;
}

.g-btn-sm {
    padding: var(--g-spacing-xs) var(--g-spacing-sm);
    font-size: var(--g-font-size-xs);
}

/* =====================================================
   FORM ELEMENTS
   ===================================================== */
.g-input, .g-select, .g-textarea {
    width: 100%;
    padding: var(--g-spacing-sm) var(--g-spacing-md);
    border: 1px solid var(--g-border-color);
    border-radius: var(--g-radius-md);
    background: var(--g-bg-input);
    color: var(--g-text-primary);
    font-size: var(--g-font-size-sm);
    transition: border-color var(--g-transition-fast), box-shadow var(--g-transition-fast);
}

.g-input:focus, .g-select:focus, .g-textarea:focus {
    outline: none;
    border-color: var(--g-primary);
    box-shadow: 0 0 0 3px var(--g-primary-bg);
}

.g-label {
    display: block;
    margin-bottom: var(--g-spacing-xs);
    font-size: var(--g-font-size-sm);
    font-weight: var(--g-font-weight-medium);
    color: var(--g-text-secondary);
}

.g-form-group {
    margin-bottom: var(--g-spacing-md);
}

.g-form-error {
    font-size: var(--g-font-size-xs);
    color: var(--g-danger);
    margin-top: var(--g-spacing-xs);
}

/* =====================================================
   BADGES
   ===================================================== */
.g-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--g-spacing-sm);
    border-radius: var(--g-radius-full);
    font-size: var(--g-font-size-xs);
    font-weight: var(--g-font-weight-medium);
}

.g-badge-primary { background: var(--g-primary-bg); color: var(--g-primary); }
.g-badge-success { background: var(--g-success-bg); color: #1B6B3A; }
.g-badge-warning { background: var(--g-warning-bg); color: #8B5A10; }
.g-badge-danger  { background: var(--g-danger-bg); color: #8B1A1A; }
.g-badge-info    { background: var(--g-info-bg); color: #1A5A80; }

/* =====================================================
   TOAST NOTIFICATIONS
   ===================================================== */
.g-toast-container {
    position: fixed;
    top: calc(var(--g-header-height) + var(--g-spacing-md));
    right: var(--g-spacing-md);
    z-index: var(--g-z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--g-spacing-sm);
}

.g-toast {
    padding: var(--g-spacing-sm) var(--g-spacing-md);
    border-radius: var(--g-radius-md);
    background: var(--g-bg-card);
    border: 1px solid var(--g-border-color);
    box-shadow: var(--g-shadow-lg);
    font-size: var(--g-font-size-sm);
    animation: g-slideIn var(--g-transition-normal);
    max-width: 360px;
}

.g-toast-success { border-left: 4px solid var(--g-success); }
.g-toast-error   { border-left: 4px solid var(--g-danger); }
.g-toast-warning { border-left: 4px solid var(--g-warning); }
.g-toast-info    { border-left: 4px solid var(--g-info); }

@keyframes g-slideIn {
    from { opacity: 0; transform: translateX(100%); }
    to { opacity: 1; transform: translateX(0); }
}

/* =====================================================
   LOADING SPINNER
   ===================================================== */
.g-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--g-border-color);
    border-top-color: var(--g-primary);
    border-radius: 50%;
    animation: g-spin 0.6s linear infinite;
}

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

/* =====================================================
   UTILITY CLASSES
   ===================================================== */
.g-hidden { display: none !important; }
.g-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.g-text-center { text-align: center; }
.g-text-right { text-align: right; }
.g-text-muted { color: var(--g-text-muted); }
.g-text-sm { font-size: var(--g-font-size-sm); }
.g-text-xs { font-size: var(--g-font-size-xs); }
.g-mt-sm { margin-top: var(--g-spacing-sm); }
.g-mt-md { margin-top: var(--g-spacing-md); }
.g-mb-md { margin-bottom: var(--g-spacing-md); }
.g-mb-lg { margin-bottom: var(--g-spacing-lg); }
.g-flex { display: flex; }
.g-flex-center { display: flex; align-items: center; }
.g-flex-between { display: flex; align-items: center; justify-content: space-between; }
.g-gap-sm { gap: var(--g-spacing-sm); }
.g-gap-md { gap: var(--g-spacing-md); }
.g-grid { display: grid; gap: var(--g-spacing-md); }
.g-grid-2 { grid-template-columns: repeat(2, 1fr); }
.g-grid-3 { grid-template-columns: repeat(3, 1fr); }
.g-grid-4 { grid-template-columns: repeat(4, 1fr); }

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

/* =====================================================
   ACCESSIBILITY — Focus, Motion, Skip Nav
   ===================================================== */

/* Focus-visible rings for all interactive elements */
.g-btn:focus-visible,
.g-sidebar-link:focus-visible,
.g-header-icon-btn:focus-visible,
.g-header-user-btn:focus-visible,
.g-header-menu-btn:focus-visible,
a:focus-visible {
    outline: 2px solid var(--g-primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px var(--g-primary-bg);
}

/* Remove default outline only when focus-visible handles it */
.g-btn:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
    outline: none;
}

/* Skip to main content link */
.g-skip-nav {
    position: absolute;
    top: -100%;
    left: var(--g-spacing-md);
    z-index: 9999;
    padding: var(--g-spacing-sm) var(--g-spacing-md);
    background: var(--g-primary);
    color: var(--g-text-inverse);
    border-radius: 0 0 var(--g-radius-md) var(--g-radius-md);
    font-size: var(--g-font-size-sm);
    font-weight: var(--g-font-weight-semibold);
    text-decoration: none;
    transition: top 0.2s ease;
}
.g-skip-nav:focus {
    top: 0;
}


/* Toast live region */
.g-toast-container {
    role: status;
}
.g-toast[role="alert"] {
    will-change: transform, opacity;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.1s !important;
        scroll-behavior: auto !important;
    }
}

/* Text overflow safety */
.g-card-title, .g-sidebar-link span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Minimum touch targets on mobile */
@media (max-width: 768px) {
    .g-btn, .g-header-icon-btn, .g-header-menu-btn, .g-sidebar-link {
        min-height: 44px;
        min-width: 44px;
    }
}

/* =====================================================
   HERO COMPONENT — Universal hero section with optional image
   Usage: .g-hero, .g-hero--split (with image), .g-hero--centered
   ===================================================== */

.g-hero {
    padding: var(--g-spacing-3xl) 0 var(--g-spacing-2xl);
}

.g-hero-inner {
    max-width: var(--g-content-max-width);
    margin: 0 auto;
    padding: 0 var(--g-spacing-lg);
}

/* Split layout (text + image) */
.g-hero--split .g-hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--g-spacing-2xl);
    align-items: center;
}

.g-hero-content {
    max-width: 560px;
}

/* Badge */
.g-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--g-font-size-xs);
    font-weight: var(--g-font-weight-semibold);
    color: var(--g-reward-gold);
    background: var(--g-reward-gold-bg);
    padding: 6px 14px;
    border-radius: var(--g-radius-full);
    margin-bottom: var(--g-spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid rgba(214, 158, 46, 0.2);
}

.g-hero-badge svg {
    width: 14px;
    height: 14px;
}

/* Title */
.g-hero-title {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: var(--g-font-weight-bold);
    letter-spacing: var(--g-letter-spacing-tight);
    line-height: 1.08;
    margin-bottom: var(--g-spacing-md);
    color: var(--g-text-primary);
}

.g-hero-title span {
    color: var(--g-reward-gold);
}

/* Subtitle */
.g-hero-sub {
    font-size: var(--g-font-size-lg);
    color: var(--g-text-secondary);
    max-width: 520px;
    margin-bottom: var(--g-spacing-lg);
    line-height: 1.6;
}

/* CTA Button — Gold gradient with animation */
.g-hero-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--g-spacing-sm);
    background: linear-gradient(135deg, var(--g-reward-gold) 0%, #C08D29 100%);
    color: #1A1A0D;
    padding: var(--g-spacing-md) var(--g-spacing-xl);
    border-radius: var(--g-radius-lg);
    font-size: var(--g-font-size-md);
    font-weight: var(--g-font-weight-bold);
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(214, 158, 46, 0.3);
    transition: transform var(--g-transition-fast), box-shadow var(--g-transition-fast);
}

.g-hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(214, 158, 46, 0.4);
    text-decoration: none;
}

.g-hero-cta:active {
    transform: translateY(0);
}

.g-hero-cta svg {
    transition: transform 0.2s;
}

.g-hero-cta:hover svg {
    transform: translateX(3px);
}

/* Secondary CTA */
.g-hero-cta--secondary {
    background: var(--g-bg-card);
    color: var(--g-text-primary);
    border: 1px solid var(--g-border-color);
    box-shadow: var(--g-shadow-sm);
}

.g-hero-cta--secondary:hover {
    background: var(--g-bg-hover);
    box-shadow: var(--g-shadow-md);
}

/* Stats row */
.g-hero-stats {
    display: flex;
    gap: var(--g-spacing-xl);
    margin-top: var(--g-spacing-xl);
    padding-top: var(--g-spacing-lg);
    border-top: 1px solid var(--g-border-light);
}

.g-hero-stat strong {
    display: block;
    font-size: var(--g-font-size-2xl);
    font-weight: var(--g-font-weight-bold);
    color: var(--g-text-primary);
}

.g-hero-stat span {
    font-size: var(--g-font-size-sm);
    color: var(--g-text-muted);
}

/* Image container */
.g-hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.g-hero-image img,
.g-hero-image svg {
    max-width: 100%;
    height: auto;
}

/* Centered variant */
.g-hero--centered .g-hero-inner {
    text-align: center;
}

.g-hero--centered .g-hero-content {
    margin: 0 auto;
}

.g-hero--centered .g-hero-sub {
    margin-left: auto;
    margin-right: auto;
}

/* Responsive */
@media (max-width: 900px) {
    .g-hero--split .g-hero-inner {
        grid-template-columns: 1fr;
        gap: var(--g-spacing-xl);
    }

    .g-hero-image {
        order: -1;
        max-width: 400px;
        margin: 0 auto;
    }

    .g-hero-content {
        text-align: center;
        max-width: 100%;
    }

    .g-hero-sub {
        margin-left: auto;
        margin-right: auto;
    }

    .g-hero-stats {
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .g-hero {
        padding: var(--g-spacing-2xl) 0 var(--g-spacing-xl);
    }

    .g-hero-stats {
        gap: var(--g-spacing-lg);
    }

    .g-hero-cta {
        width: 100%;
        justify-content: center;
    }
}