/* GDG on Campus Sakarya — Design System & Global Styles */
/* Canonical Reference: docs/design-system.md */

:root {
    /* Brand colors */
    --blue: #0b57d0;
    --blue-bright: #4285f4;
    --blue-soft: #eaf2ff;
    --red: #ea4335;
    --red-soft: #fce8e6;
    --yellow: #f9ab00;
    --yellow-soft: #fff4d5;
    --green: #1e8e3e;
    --green-soft: #e6f4ea;

    /* Semantic colors */
    --ink: #1f1f1f;
    --muted: #5f6368;
    --outline: #dfe1e5;
    --surface: #ffffff;
    --surface-soft: #f8f9fa;

    /* Backward-compatible aliases */
    --color-gdg-blue: var(--blue);
    --color-gdg-red: var(--red);
    --color-gdg-yellow: var(--yellow);
    --color-gdg-green: var(--green);
    --color-primary: var(--blue);
    --color-primary-hover: #0842a0;
    --color-bg-page: var(--surface-soft);
    --color-card-bg: var(--surface);
    --color-text-main: var(--ink);
    --color-text-muted: var(--muted);
    --color-border: var(--outline);

    /* Card Pastel Tints */
    --tint-blue-bg: var(--blue-soft);
    --tint-blue-border: #cbe0fe;
    --tint-green-bg: var(--green-soft);
    --tint-green-border: #c8edd3;
    --tint-yellow-bg: var(--yellow-soft);
    --tint-yellow-border: #fde8a0;
    --tint-red-bg: var(--red-soft);
    --tint-red-border: #f9cfcb;

    /* Spacing scale */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    --space-20: 80px;

    /* Shape & Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-pill: 999px;
    --radius-full: 999px;

    /* Layout */
    --max-width: 1280px;
    --container-max-width: 1280px;
    --header-height: 76px;
    --page-gutter: clamp(16px, 4vw, 32px);

    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-family: var(--font-family-base);
    --font-display-large: clamp(36px, 5.2vw, 64px);
    --font-display-medium: clamp(26px, 3.6vw, 42px);
    --font-display-small: clamp(20px, 2.4vw, 26px);
    --font-body-large: 18px;
    --font-body: 15px;
    --font-label: 12px;

    /* Elevation / Shadows */
    --shadow-sm: 0 2px 6px rgba(31, 31, 31, 0.04);
    --shadow-md: 0 8px 24px rgba(31, 31, 31, 0.06);
    --shadow-lg: 0 18px 38px rgba(31, 31, 31, 0.08);
    --shadow-card: 0 18px 38px rgba(31, 31, 31, 0.08);
    --shadow-action: 0 8px 20px rgba(11, 87, 208, 0.20);

    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* CSS Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

html, body {
    height: 100%;
    font-family: var(--font-family-base);
    background-color: var(--surface-soft);
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Reset headings default Bootstrap overrides */
h1, h2, h3, h4, h5, h6 {
    color: var(--ink);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.02em;
    margin-bottom: 0;
}

p {
    margin-bottom: 0;
    line-height: 1.65;
}

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

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

/* Accessibility: Focus Visible */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--blue);
    outline-offset: 2px;
}

/* Skip Link (Accessibility) */
.skip-link {
    position: absolute;
    top: 1rem;
    left: 1rem;
    transform: translateY(-200%);
    background: var(--blue);
    color: #ffffff !important;
    padding: 0.75rem 1.25rem;
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
    z-index: 10000;
    text-decoration: none;
    transition: transform var(--transition-fast);
    box-shadow: var(--shadow-md);
    pointer-events: none;
}

.skip-link:focus,
.skip-link:focus-visible {
    transform: translateY(0);
    pointer-events: auto;
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}

/* Layout Container */
.container-custom {
    width: 100%;
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--page-gutter);
    padding-right: var(--page-gutter);
}

/* Page Glow Background Gradient */
.page-glow-bg {
    position: relative;
    background: radial-gradient(circle at 12% 8%, rgba(11, 87, 208, 0.04) 0%, transparent 45%),
                radial-gradient(circle at 88% 12%, rgba(234, 67, 53, 0.035) 0%, transparent 40%),
                radial-gradient(circle at 50% 70%, rgba(30, 142, 62, 0.035) 0%, transparent 50%),
                radial-gradient(circle at 85% 85%, rgba(249, 171, 0, 0.035) 0%, transparent 45%);
    min-height: 100vh;
    background-color: var(--surface-soft);
}

/* Global Button & Pill Styles */
.btn-action-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    background-color: var(--blue);
    color: #ffffff !important;
    font-weight: 600;
    font-size: 0.9375rem;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
    text-decoration: none;
    box-shadow: var(--shadow-action);
    transition: all var(--transition-fast);
    cursor: pointer;
    line-height: 1.2;
}

.btn-action-primary:hover {
    background-color: var(--color-primary-hover);
    color: #ffffff !important;
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(11, 87, 208, 0.28);
}

.btn-action-outlined {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    background-color: var(--surface);
    color: var(--ink) !important;
    font-weight: 600;
    font-size: 0.9375rem;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-pill);
    border: 1px solid var(--outline);
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    line-height: 1.2;
}

.btn-action-outlined:hover {
    background-color: var(--surface-soft);
    border-color: #c4c7c5;
    color: var(--ink) !important;
    transform: translateY(-1px);
}

/* Section Common Helpers */
.section-kicker {
    display: inline-block;
    font-size: var(--font-label);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: var(--space-2);
}

.section-kicker.kicker-blue { color: var(--blue); }
.section-kicker.kicker-red { color: var(--red); }
.section-kicker.kicker-yellow { color: var(--yellow); }
.section-kicker.kicker-green { color: var(--green); }

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

/* ==========================================================================
   Google Admin Platform Tokens & Styles (Enes Admin Implementation)
   ========================================================================== */
:root {
    --google-blue: #1A73E8;
    --google-blue-hover: #1557B0;
    --google-blue-surface: #E8F0FE;
    --google-red: #EA4335;
    --google-red-surface: #FCE8E6;
    --google-yellow: #FBBC04;
    --google-yellow-surface: #FEF7E0;
    --google-green: #34A853;
    --google-green-surface: #E6F4EA;
    
    --google-bg: #F8F9FA;
    --google-surface: #FFFFFF;
    --google-surface-variant: #F1F3F4;
    --google-border: #E0E2E6;
    --google-border-subtle: #ECEFF1;
    
    --google-text-primary: #202124;
    --google-text-secondary: #5F6368;
    --google-text-tertiary: #80868B;
    
    --google-radius-sm: 8px;
    --google-radius: 12px;
    --google-radius-lg: 16px;
    --google-radius-pill: 28px;
    
    --google-shadow-sm: 0 1px 2px 0 rgba(60,64,67,0.1), 0 1px 3px 1px rgba(60,64,67,0.06);
    --google-shadow-md: 0 1px 3px 0 rgba(60,64,67,0.15), 0 4px 8px 3px rgba(60,64,67,0.1);
}

/* Material Symbols Outlined Helper */
.material-symbols-outlined {
    font-family: 'Material Symbols Outlined';
    font-weight: normal;
    font-style: normal;
    font-size: 20px;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-feature-settings: 'liga';
    -webkit-font-smoothing: antialiased;
    vertical-align: middle;
}

/* Google-Style Cards */
.g-card {
    background-color: var(--google-surface);
    border: 1px solid var(--google-border);
    border-radius: var(--google-radius);
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.g-card:hover {
    box-shadow: var(--google-shadow-sm);
    border-color: #D2D6DC;
}

/* Google Buttons */
.btn-google-primary {
    background-color: var(--google-blue);
    color: #FFFFFF !important;
    border: 1px solid transparent;
    border-radius: var(--google-radius-pill);
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.5rem 1.25rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color 0.15s ease, box-shadow 0.15s ease;
    text-decoration: none;
    cursor: pointer;
}

.btn-google-primary:hover {
    background-color: var(--google-blue-hover);
    box-shadow: 0 1px 3px 1px rgba(66, 133, 244, 0.25);
    color: #FFFFFF !important;
}

.btn-google-secondary {
    background-color: transparent;
    color: var(--google-text-primary) !important;
    border: 1px solid var(--google-border);
    border-radius: var(--google-radius-pill);
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.5rem 1.25rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color 0.15s ease, border-color 0.15s ease;
    text-decoration: none;
    cursor: pointer;
}

.btn-google-secondary:hover {
    background-color: var(--google-surface-variant);
    border-color: #C6C9CE;
}

.btn-google-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: var(--google-text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.15s ease, color 0.15s ease;
    text-decoration: none;
    cursor: pointer;
}

.btn-google-icon:hover {
    background-color: var(--google-surface-variant);
    color: var(--google-text-primary);
}

/* Status Chips */
.chip-status {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.75rem;
    border-radius: var(--google-radius-pill);
    font-size: 0.75rem;
    font-weight: 600;
}

.chip-status.blue {
    background-color: var(--google-blue-surface);
    color: #185ABC;
}

.chip-status.yellow {
    background-color: var(--google-yellow-surface);
    color: #935B00;
}

.chip-status.green {
    background-color: var(--google-green-surface);
    color: #137333;
}

.chip-status.red {
    background-color: var(--google-red-surface);
    color: #C5221F;
}

.chip-status.gray {
    background-color: var(--google-surface-variant);
    color: var(--google-text-secondary);
}

/* Google Inputs */
.g-input {
    border: 1px solid var(--google-border);
    border-radius: var(--google-radius-sm);
    padding: 0.6rem 0.85rem;
    font-size: 0.875rem;
    color: var(--google-text-primary);
    background-color: var(--google-surface);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.g-input:focus {
    border-color: var(--google-blue);
    outline: none;
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
}

/* Modals */
.modal-content {
    border-radius: var(--google-radius-lg) !important;
    border: 1px solid var(--google-border) !important;
    box-shadow: var(--google-shadow-md) !important;
}

/* Tables */
.g-table {
    border-collapse: separate;
    border-spacing: 0;
    width: 100%;
}

.g-table th {
    background-color: #FAFBFD;
    color: var(--google-text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--google-border);
}

.g-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--google-border-subtle);
    font-size: 0.875rem;
    color: var(--google-text-primary);
    vertical-align: middle;
}

.g-table tbody tr:hover td {
    background-color: #F8FAFD;
}

/* Admin panel scroll fix - revised */

.google-admin-layout {
    position: fixed;
    inset: 0;
    display: flex;
    width: 100%;
    height: 100vh !important;
    height: 100dvh !important;
    min-height: 0;
    overflow: hidden !important;
}

.google-sidebar {
    flex: 0 0 260px;
    height: 100%;
    min-height: 0;
    overflow: hidden;
}

.google-sidebar .sidebar-wrapper {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    min-height: 0;
    overflow: hidden;
}

.google-sidebar .nav-scrollable {
    flex: 1 1 0%;
    min-height: 0;
    overflow-x: hidden;
    overflow-y: auto !important;
    overscroll-behavior-y: contain;
}

.google-main-wrapper {
    display: flex;
    flex: 1 1 0%;
    flex-direction: column;
    height: 100%;
    min-width: 0;
    min-height: 0;
    overflow: hidden !important;
}

.google-top-header {
    flex: 0 0 65px;
}

.google-page-content {
    display: block;
    flex: 1 1 0%;
    height: 0;
    min-width: 0;
    min-height: 0;
    overflow-x: hidden !important;
    overflow-y: scroll !important;
    overscroll-behavior-y: contain;
    -webkit-overflow-scrolling: touch;
}
/* =========================================================
   Responsive Member Photos
   Tam fotoğraf + bulanık arka plan
   ========================================================= */

.member-card .avatar-area {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    background: #e9ecf0;
}

/* Arkada kartın genişliğini dolduran bulanık fotoğraf */
.member-card .avatar-area .avatar-backdrop {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.member-card .avatar-area .avatar-backdrop img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;

    filter: blur(18px);
    transform: scale(1.08);
    opacity: 0.65;
}

/* Ön planda fotoğrafın tamamı görünsün */
.member-card .avatar-area > .avatar-img {
    position: relative;
    z-index: 1;

    display: block;
    width: 100%;
    height: 100%;

    object-fit: contain;
    object-position: center;

    max-width: 100%;
    max-height: 100%;
    margin: 0;
}

/* Fotoğraf bulunmayan üyelerde mevcut görünümü koru */
.member-card .avatar-area > .avatar-placeholder {
    position: relative;
    z-index: 1;
}

/* =========================================================
   Admin Panel - Responsive Mobile Sidebar
   ========================================================= */

/* Desktop: Mobil kontroller gizli */
.admin-mobile-menu-toggle,
.admin-mobile-sidebar-close,
.admin-sidebar-backdrop {
    display: none;
}

/* Mobil görünüm */
@media (max-width: 767.98px) {

    /* Ana yönetim alanı ekran dışına taşmasın */
    .google-admin-layout {
        width: 100%;
        max-width: 100vw;
        overflow: hidden !important;
    }

    /*
       Sidebar artık mobilde normal flex elemanı değil,
       ekranın üzerine açılan bir drawer.
    */
    .google-sidebar {
        position: fixed !important;
        top: 0;
        bottom: 0;
        left: 0;

        width: min(86vw, 320px) !important;
        max-width: calc(100vw - 48px);

        height: 100dvh !important;
        z-index: 1200;

        flex: none !important;
        overflow: hidden;

        background: #ffffff;
        box-shadow: 8px 0 32px rgba(0, 0, 0, 0.14);

        transform: translateX(-105%);
        transition: transform 0.25s ease;
        visibility: hidden;
    }

    .google-sidebar.mobile-open {
        transform: translateX(0);
        visibility: visible;
    }

    /* Menü dışına dokunulduğunda kapanmasını sağlayan fon */
    .admin-sidebar-backdrop {
        display: block;
        position: fixed;
        inset: 0;

        z-index: 1100;
        border: none;
        padding: 0;

        background: rgba(20, 25, 35, 0.48);

        opacity: 0;
        visibility: hidden;
        pointer-events: none;

        transition: opacity 0.25s ease,
                    visibility 0.25s ease;
    }

    .admin-sidebar-backdrop.visible {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    /* Ana içerik alanı artık tam genişliği kullanır */
    .google-main-wrapper {
        width: 100%;
        max-width: 100%;
        min-width: 0;

        flex: 1 1 100% !important;
    }

    .google-page-content {
        width: 100%;
        max-width: 100%;
        overflow-x: auto !important;
    }

    /* Üst çubuktaki mobil menü butonu */
    .admin-mobile-menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;

        width: 44px;
        height: 44px;
        flex: 0 0 44px;

        border: none;
        border-radius: 10px;
        background: transparent;
        color: #202124;

        cursor: pointer;
    }

    .admin-mobile-menu-toggle:hover {
        background: #f1f3f4;
    }

    .admin-mobile-menu-toggle .material-symbols-outlined {
        font-size: 26px;
    }

    /* Sidebar içindeki X butonu */
    .admin-mobile-sidebar-close {
        display: inline-flex;
        align-items: center;
        justify-content: center;

        width: 40px;
        height: 40px;
        flex: 0 0 40px;

        border: none;
        border-radius: 50%;
        background: #f1f3f4;
        color: #202124;

        cursor: pointer;
    }

    .admin-mobile-sidebar-close:hover {
        background: #e8eaed;
    }

    .admin-mobile-sidebar-close .material-symbols-outlined {
        font-size: 23px;
    }

    /* Sidebar başlığı: metin ve kapatma butonu aynı satırda */
    .admin-sidebar-brand {
        gap: 10px !important;
        padding-right: 12px !important;
    }

    .admin-sidebar-brand > .overflow-hidden {
        min-width: 0;
    }

    /* Mobil başlığın fazla yer kaplamasını önle */
    .google-top-header {
        gap: 8px;
        padding-left: 10px !important;
        padding-right: 10px !important;
    }

    /* Dar telefonlarda breadcrumb yerine menü ve işlemler kalsın */
    .google-top-header > div:first-of-type {
        min-width: 0;
    }

    .google-top-header > div:first-of-type > span.fw-semibold {
        font-size: 0.75rem !important;
        white-space: nowrap;
    }
}

/* Çok dar telefon ekranları */
@media (max-width: 420px) {

    .google-search-container {
        display: none !important;
    }

    .google-top-header {
        justify-content: flex-start !important;
    }

    .google-top-header > div:first-of-type {
        display: none !important;
    }

    .google-top-header > div:last-child {
        margin-left: auto;
        gap: 4px !important;
    }
}

/* Hareket azaltma tercihine saygı duy */
@media (prefers-reduced-motion: reduce) {
    .google-sidebar,
    .admin-sidebar-backdrop {
        transition: none !important;
    }
}