/* Başarı Takip — Uygulama Arayüzü Önizleme (mock) */

.app-ui-section {
    padding: 100px 0 120px;
    background: linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
    overflow: hidden;
}

.app-ui-section .section-header {
    margin-bottom: 48px;
}

.app-ui-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.app-ui-tab {
    padding: 10px 20px;
    border-radius: 999px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    background: #fff;
    font-size: 14px;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    transition: all 0.25s ease;
}

.app-ui-tab:hover,
.app-ui-tab.active {
    background: #007AFF;
    color: #fff;
    border-color: #007AFF;
    box-shadow: 0 4px 14px rgba(0, 122, 255, 0.25);
}

.app-ui-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 48px;
    max-width: 1140px;
    margin-left: auto;
    margin-right: auto;
}

.app-ui-row:last-child {
    margin-bottom: 0;
}

.app-ui-phone-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.app-ui-phone-label {
    font-size: 15px;
    font-weight: 700;
    color: #1a1a1a;
    text-align: center;
}

.app-ui-phone-sublabel {
    font-size: 13px;
    color: #8E8E93;
    text-align: center;
    margin-top: -8px;
}

/* Phone frame */
.app-phone {
    width: 100%;
    max-width: 280px;
    aspect-ratio: 9 / 19.5;
    background: #1a1a1a;
    border-radius: 36px;
    padding: 10px;
    box-shadow:
        0 24px 48px rgba(0, 0, 0, 0.18),
        0 0 0 1px rgba(255, 255, 255, 0.06) inset;
    position: relative;
}

.app-phone::before {
    content: '';
    position: absolute;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 22px;
    background: #1a1a1a;
    border-radius: 0 0 14px 14px;
    z-index: 10;
}

.app-phone-screen {
    width: 100%;
    height: 100%;
    border-radius: 28px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Inter', sans-serif;
    font-size: 11px;
    line-height: 1.35;
    -webkit-font-smoothing: antialiased;
}

/* iOS scaffold */
.bt-ios {
    background: #F2F2F7;
    color: #000;
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.bt-ios-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 36px 14px 8px;
    background: rgba(242, 242, 247, 0.92);
    backdrop-filter: blur(12px);
    flex-shrink: 0;
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.06);
}

.bt-ios-nav.large {
    padding-bottom: 4px;
}

.bt-ios-nav .bt-back {
    color: #007AFF;
    font-size: 12px;
    font-weight: 400;
}

.bt-ios-nav .bt-title {
    font-size: 13px;
    font-weight: 600;
    text-align: center;
    flex: 1;
}

.bt-ios-nav .bt-large-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.4px;
    flex: 1;
}

.bt-ios-nav .bt-actions {
    display: flex;
    gap: 10px;
    color: #007AFF;
    font-size: 14px;
}

.bt-ios-body {
    flex: 1;
    overflow-y: auto;
    padding: 10px 12px 14px;
    scrollbar-width: none;
}

.bt-ios-body::-webkit-scrollbar {
    display: none;
}

.bt-card {
    background: #fff;
    border-radius: 16px;
    padding: 12px;
    margin-bottom: 10px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.bt-card.radius-24 {
    border-radius: 20px;
}

/* Student detail */
.bt-student-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.bt-avatar-ring {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: conic-gradient(#34C759 0% 82%, #E5E5EA 82% 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.bt-avatar-ring span {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    color: #34C759;
}

.bt-student-name {
    font-size: 16px;
    font-weight: 700;
}

.bt-goal-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.bt-goal-icon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: linear-gradient(135deg, #FF9500, #FF6B00);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.bt-menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 0;
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.06);
}

.bt-menu-item:last-child {
    border-bottom: none;
}

.bt-menu-icon {
    width: 28px;
    height: 28px;
    border-radius: 7px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    flex-shrink: 0;
}

.bt-menu-icon.teal { background: linear-gradient(135deg, #5AC8FA, #007AFF); }
.bt-menu-icon.blue { background: linear-gradient(135deg, #64B5F6, #1976D2); }
.bt-menu-icon.green { background: linear-gradient(135deg, #81C784, #2E7D32); }
.bt-menu-icon.purple { background: linear-gradient(135deg, #CE93D8, #7B1FA2); }
.bt-menu-icon.orange { background: linear-gradient(135deg, #FFB74D, #F57C00); }

.bt-menu-text {
    flex: 1;
    font-size: 12px;
    font-weight: 500;
    color: #007AFF;
}

.bt-menu-chevron {
    color: #C6C6C8;
    font-size: 14px;
}

.bt-badge-yeni {
    font-size: 9px;
    font-weight: 700;
    background: #FF3B30;
    color: #fff;
    padding: 2px 5px;
    border-radius: 4px;
    margin-left: 4px;
}

.bt-star {
    color: #FF9500;
    font-size: 10px;
}

/* Summary cards */
.bt-summary-head {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 10px;
}

.bt-summary-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    flex-shrink: 0;
}

.bt-summary-icon.blue { background: linear-gradient(135deg, #5AC8FA, #007AFF); }
.bt-summary-icon.purple { background: linear-gradient(135deg, #CE93D8, #7B1FA2); }

.bt-summary-title {
    font-size: 12px;
    font-weight: 700;
    line-height: 1.3;
}

.bt-summary-sub {
    font-size: 10px;
    color: #8E8E93;
    margin-top: 2px;
}

.bt-stats-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    margin-bottom: 6px;
}

.bt-stats-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.bt-stat-box {
    background: #F2F2F7;
    border-radius: 8px;
    padding: 6px 4px;
    text-align: center;
}

.bt-stat-val {
    font-size: 12px;
    font-weight: 700;
}

.bt-stat-lbl {
    font-size: 8px;
    color: #8E8E93;
}

.bt-chart-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #007AFF;
    font-size: 11px;
    font-weight: 500;
    padding: 4px 0;
}

/* Daily list item */
.bt-day-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.06);
}

.bt-day-row:last-child {
    border-bottom: none;
}

.bt-progress-ring {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: conic-gradient(#34C759 0% 78%, #E5E5EA 78% 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 9px;
    font-weight: 700;
    color: #34C759;
}

.bt-progress-ring.orange {
    background: conic-gradient(#FF9500 0% 65%, #E5E5EA 65% 100%);
    color: #FF9500;
}

.bt-day-meta {
    flex: 1;
    min-width: 0;
}

.bt-day-date {
    font-size: 11px;
    font-weight: 600;
}

.bt-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 3px;
    margin-top: 3px;
}

.bt-badge {
    font-size: 8px;
    background: #E5E5EA;
    padding: 2px 5px;
    border-radius: 4px;
    color: #333;
}

/* Study plan */
.bt-plan-header {
    background: #fff;
    padding: 8px;
    border-radius: 10px;
    margin-bottom: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.bt-week-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 10px;
    font-weight: 600;
    margin-bottom: 6px;
}

.bt-week-nav button {
    background: #F2F2F7;
    border: 0.5px solid #C6C6C8;
    border-radius: 6px;
    width: 22px;
    height: 22px;
    font-size: 10px;
    cursor: default;
}

.bt-plan-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    font-size: 8px;
    text-align: center;
    margin-bottom: 6px;
}

.bt-plan-stats strong {
    display: block;
    font-size: 11px;
    color: #007AFF;
}

.bt-plan-btns {
    display: flex;
    gap: 4px;
}

.bt-plan-btn {
    flex: 1;
    font-size: 7px;
    padding: 4px 2px;
    background: #F2F2F7;
    border: 0.5px solid #C6C6C8;
    border-radius: 6px;
    text-align: center;
}

.bt-calendar {
    display: grid;
    grid-template-columns: 28px repeat(7, 1fr);
    gap: 2px;
    font-size: 7px;
}

.bt-cal-head {
    text-align: center;
    font-weight: 600;
    color: #8E8E93;
    padding: 2px 0;
}

.bt-cal-time {
    color: #8E8E93;
    text-align: right;
    padding-right: 2px;
}

.bt-cal-cell {
    background: #fff;
    border-radius: 3px;
    min-height: 18px;
    border: 0.5px solid #E5E5EA;
}

.bt-cal-cell.filled-math {
    background: rgba(76, 175, 80, 0.35);
    font-size: 6px;
    padding: 1px;
    color: #1B5E20;
    font-weight: 600;
}

.bt-cal-cell.filled-turk {
    background: rgba(33, 150, 243, 0.3);
    font-size: 6px;
    padding: 1px;
    color: #0D47A1;
}

.bt-cal-cell.filled-fiz {
    background: rgba(255, 152, 0, 0.35);
    font-size: 6px;
    padding: 1px;
    color: #E65100;
}

/* BT Akademi — warm theme */
.bt-akademi {
    background: #FAF5EF;
    color: #1A1512;
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.bt-akademi-nav {
    padding: 36px 14px 10px;
    font-size: 17px;
    font-weight: 700;
    color: #1A1512;
}

.bt-akademi-body {
    flex: 1;
    overflow-y: auto;
    padding: 0 12px 12px;
}

.bt-akademi-search {
    width: 100%;
    padding: 8px 12px;
    border-radius: 12px;
    border: 1px solid #EFE6DB;
    background: #fff;
    font-size: 11px;
    margin-bottom: 10px;
    color: #7C7166;
}

.bt-akademi-progress {
    background: linear-gradient(90deg, #EE7420, #F59A4E);
    color: #fff;
    border-radius: 10px;
    padding: 8px 10px;
    font-size: 10px;
    font-weight: 600;
    margin-bottom: 10px;
}

.bt-akademi-segments {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    margin-bottom: 10px;
    scrollbar-width: none;
}

.bt-akademi-seg {
    font-size: 8px;
    padding: 5px 8px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid #EFE6DB;
    white-space: nowrap;
    flex-shrink: 0;
}

.bt-akademi-seg.active {
    background: #EE7420;
    color: #fff;
    border-color: #EE7420;
}

.bt-akademi-card {
    background: #fff;
    border: 1px solid #EFE6DB;
    border-radius: 12px;
    padding: 10px;
    margin-bottom: 8px;
}

.bt-akademi-card h4 {
    font-size: 11px;
    font-weight: 700;
    margin-bottom: 4px;
    color: #EE7420;
}

.bt-akademi-card p {
    font-size: 9px;
    color: #7C7166;
    line-height: 1.4;
}

/* Messages */
.bt-conv-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.06);
}

.bt-conv-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #64B5F6, #1976D2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    flex-shrink: 0;
}

.bt-conv-meta {
    flex: 1;
    min-width: 0;
}

.bt-conv-name {
    font-size: 12px;
    font-weight: 600;
}

.bt-conv-preview {
    font-size: 10px;
    color: #8E8E93;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bt-conv-time {
    font-size: 9px;
    color: #8E8E93;
}

.bt-unread-dot {
    width: 8px;
    height: 8px;
    background: #007AFF;
    border-radius: 50%;
}

/* Chat */
.bt-chat-thread {
    flex: 1;
    padding: 8px 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    overflow-y: auto;
}

.bt-date-pill {
    align-self: center;
    font-size: 9px;
    color: #8E8E93;
    background: rgba(0,0,0,0.05);
    padding: 3px 10px;
    border-radius: 999px;
}

.bt-bubble {
    max-width: 75%;
    padding: 7px 10px;
    border-radius: 16px;
    font-size: 11px;
    line-height: 1.35;
}

.bt-bubble.other {
    align-self: flex-start;
    background: #fff;
    border-bottom-left-radius: 4px;
}

.bt-bubble.mine {
    align-self: flex-end;
    background: #34C759;
    color: #fff;
    border-bottom-right-radius: 4px;
}

.bt-chat-input {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px 16px;
    background: rgba(242,242,247,0.95);
    border-top: 0.5px solid rgba(0,0,0,0.06);
}

.bt-chat-input .attach,
.bt-chat-input .send {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.bt-chat-input .attach {
    background: #E5E5EA;
    color: #8E8E93;
}

.bt-chat-input .send {
    background: #007AFF;
    color: #fff;
}

.bt-chat-input input {
    flex: 1;
    border: none;
    background: #fff;
    border-radius: 18px;
    padding: 7px 12px;
    font-size: 11px;
}

/* Notifications */
.bt-notif-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 12px 8px;
    font-size: 11px;
    color: #007AFF;
}

.bt-notif-card {
    border-radius: 14px;
    padding: 10px;
    margin-bottom: 8px;
    color: #fff;
    display: flex;
    gap: 8px;
}

.bt-notif-card.plan {
    background: linear-gradient(135deg, #00838F, #283593);
}

.bt-notif-card.activity {
    background: linear-gradient(135deg, #9FA8DA, #311B92);
}

.bt-notif-card.message {
    background: linear-gradient(135deg, #4DB6AC, #00695C);
}

.bt-notif-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255,255,255,0.25);
    flex-shrink: 0;
}

.bt-notif-content h4 {
    font-size: 11px;
    font-weight: 700;
    margin-bottom: 2px;
}

.bt-notif-content p {
    font-size: 9px;
    opacity: 0.9;
    line-height: 1.35;
}

.bt-notif-footer {
    font-size: 8px;
    opacity: 0.75;
    margin-top: 4px;
}

.bt-notif-flat {
    display: flex;
    gap: 8px;
    padding: 8px 0;
    border-bottom: 0.5px solid rgba(0,0,0,0.06);
}

.bt-notif-flat .bt-conv-avatar {
    width: 32px;
    height: 32px;
    font-size: 11px;
}

/* How it works */
.how-it-works {
    padding: 100px 0;
    background: #fff;
}

.how-switcher {
    max-width: 900px;
    margin: 0 auto;
}

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

.how-tabs {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 48px;
    background: #F2F2F7;
    border-radius: 12px;
    padding: 4px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.how-tab {
    flex: 1;
    padding: 12px 16px;
    border: none;
    background: transparent;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    color: #8E8E93;
    cursor: pointer;
    transition: all 0.25s ease;
    text-align: center;
    display: block;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
}

#how-r-student:checked ~ .how-tabs label[for="how-r-student"],
#how-r-coach:checked ~ .how-tabs label[for="how-r-coach"] {
    background: #fff;
    color: #007AFF;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.how-panel {
    display: none;
    max-width: 900px;
    margin: 0 auto;
}

#how-r-student:checked ~ .how-panels #how-student,
#how-r-coach:checked ~ .how-panels #how-coach {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.how-step {
    text-align: center;
    padding: 24px 16px;
}

.how-step-num {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #007AFF, #5856D6);
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.how-step h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.how-step p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.mobile-bridge {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.mobile-bridge .section-title,
.mobile-bridge .section-description {
    color: #fff;
}

.mobile-bridge .section-description {
    opacity: 0.9;
}

.bridge-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.bridge-card {
    background: rgba(255,255,255,0.12);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid rgba(255,255,255,0.15);
}

.bridge-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.bridge-card p {
    font-size: 14px;
    opacity: 0.9;
    line-height: 1.6;
}

.bridge-sync {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 40px;
    font-size: 14px;
    font-weight: 600;
}

.bridge-sync .arrow {
    font-size: 24px;
    opacity: 0.8;
}

@media (max-width: 1024px) {
    .app-ui-row {
        grid-template-columns: repeat(2, 1fr);
    }
    #how-r-student:checked ~ .how-panels #how-student,
    #how-r-coach:checked ~ .how-panels #how-coach {
        grid-template-columns: 1fr;
    }
    .bridge-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .app-ui-row {
        grid-template-columns: 1fr;
        max-width: 300px;
    }
    .app-ui-tabs {
        gap: 6px;
    }
    .app-ui-tab {
        font-size: 12px;
        padding: 8px 14px;
    }
}