/* ═══════════════════════════════════════════════════════════════
   İdari Evrak — Giriş ve Üyelik Sayfası Stilleri
   Sitenin İç Tasarımı ve Renk Paleti (style.css) ile Birebir Uyumlu
   Yazı Tipi: Inter (Sitede kullanılan font)
   Renkler: #1A3A5C (Kurumsal Lacivert), #0D2B45, #F5F6F8, #FFFFFF, #AEB7C2
   Tüm kenarlar köşeli (border-radius: 0)
   ═══════════════════════════════════════════════════════════════ */

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

:root {
    --primary: #1A3A5C;
    --primary-hover: #0D2B45;
    --primary-light: #E8EEF4;
    --bg-body: #F5F6F8;
    --bg-card: #FFFFFF;
    --text-main: #212529;
    --text-muted: #6C757D;
    --border-color: #AEB7C2;
    --border-light: #DEE2E6;
    --danger: #C82333;
    --danger-light: #F8D7DA;
    --success: #28A745;
    --success-light: #D4EDDA;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

/* Sitenin genel kuralı: Keskin köşeli (border-radius: 0) ve Inter fontu */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    border-radius: 0 !important;
}

html, body {
    min-height: 100vh;
    background-color: var(--bg-body);
    color: var(--text-main);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Sayfa Kapsayıcısı */
.login-page-wrapper {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

/* ═══════════════════════════════════════════════════════════════
   SOL BÖLÜM: KURUMSAL LACİVERT PANEL (SOLID #1A3A5C - SİTE ÜST ÇUBUK RENGİ)
   ═══════════════════════════════════════════════════════════════ */
.login-showcase-panel {
    flex: 1.2;
    background-color: var(--primary);
    color: #FFFFFF;
    padding: 44px 50px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-right: 1px solid var(--border-color);
}

.showcase-header {
    margin-bottom: 20px;
}

.showcase-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: #FFFFFF;
    line-height: 1.3;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.showcase-title span {
    color: #93C5FD;
}

.showcase-desc {
    font-size: 0.9rem;
    color: #E8EEF4;
    max-width: 580px;
    line-height: 1.55;
    opacity: 0.9;
}

/* Sekmeler (Tab Bar) */
.features-tab-container {
    margin: 16px 0;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.tab-nav-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background-color: #122840;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-bottom: 2px solid #0D2B45;
    margin-bottom: 18px;
}

.tab-nav-btn {
    background: transparent;
    border: none;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 3px solid transparent;
    color: #CBD5E1;
    padding: 12px 6px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.15s ease, color 0.15s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.tab-nav-btn:last-child {
    border-right: none;
}

.tab-nav-btn:hover {
    color: #FFFFFF;
    background-color: rgba(255, 255, 255, 0.05);
}

.tab-nav-btn.active {
    color: #FFFFFF;
    background-color: #0D2B45;
    border-bottom-color: #60A5FA;
    font-weight: 700;
}

.tab-nav-btn .tab-icon {
    font-size: 1.1rem;
}

.tab-nav-btn .tab-label {
    white-space: nowrap;
}

/* Sekme İçerikleri */
.tab-content-panel {
    display: none;
    animation: tabFadeIn 0.2s ease forwards;
}

.tab-content-panel.active {
    display: block;
}

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

.tab-panel-header {
    margin-bottom: 12px;
}

.tab-panel-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: #FFFFFF;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-panel-desc {
    font-size: 0.82rem;
    color: #CBD5E1;
    margin-top: 2px;
}

.feature-cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 9px;
}

.feature-card {
    background-color: #122840;
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: 12px 14px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.feature-card:hover {
    background-color: #0D2B45;
    border-color: rgba(255, 255, 255, 0.25);
}

.card-icon-box {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #FFFFFF;
    font-size: 0.95rem;
}

.card-body {
    flex: 1;
}

.card-heading {
    font-size: 0.88rem;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 2px;
}

.card-text {
    font-size: 0.8rem;
    color: #CBD5E1;
    line-height: 1.4;
}

/* Sol Alt Bilgi */
.showcase-footer {
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.78rem;
    color: #CBD5E1;
}

.showcase-footer a {
    color: #93C5FD;
    text-decoration: none;
    font-weight: 600;
}

.showcase-footer a:hover {
    text-decoration: underline;
}

/* ═══════════════════════════════════════════════════════════════
   SAĞ BÖLÜM: FORM ALANI (GİRİŞ YAP & ÜYE OL)
   ═══════════════════════════════════════════════════════════════ */
.login-form-panel {
    flex: 1;
    min-width: 440px;
    max-width: 580px;
    background-color: var(--bg-card);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding: 20px 44px 28px;
    position: relative;
    overflow-y: auto;
}

.login-card {
    width: 100%;
    max-width: 410px;
    margin: 0 auto;
}

/* Logo ve Başlık: Ortalanmış ve Kompakt (Input alanına yakın) */
.login-brand-area {
    margin: 0 0 8px 0;
    padding: 0;
    text-align: center; /* Ortalanmış */
}

.login-system-logo {
    width: auto;
    max-width: 100%;
    object-fit: contain;
    margin: 0 auto; /* Ortalanmış, alt boşluk sıfırlandı */
    display: block;
}

.fallback-logo-emblem {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background-color: var(--primary);
    color: #FFFFFF;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 8px auto;
    border: 1px solid var(--border-color);
}

/* Giriş / Üye Ol Üst Geçiş Sekmesi */
.auth-mode-switch {
    display: flex;
    border: 1px solid var(--border-color);
    background-color: var(--bg-body);
    margin-bottom: 12px;
}

.auth-mode-btn {
    flex: 1;
    padding: 10px 14px;
    font-size: 0.875rem;
    font-weight: 600;
    text-align: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-mode-btn.active {
    background-color: #FFFFFF;
    color: var(--primary);
    font-weight: 700;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.auth-mode-btn:hover:not(.active) {
    color: var(--text-main);
    background-color: #ECEEF2;
}

/* Uyarı Mesajları */
.login-alert {
    padding: 10px 14px;
    margin-bottom: 16px;
    font-size: 0.84rem;
    font-weight: 600;
    border: 1px solid transparent;
}

.login-alert-error {
    background-color: var(--danger-light);
    border-color: #F5C6CB;
    color: var(--danger);
}

.login-alert-success {
    background-color: var(--success-light);
    border-color: #C3E6CB;
    color: #155724;
}

.login-alert-info {
    background-color: var(--primary-light);
    border-color: #B8D0E8;
    color: var(--primary);
    font-weight: 500;
}

/* Form Elemanları (style.css form-control ile %100 uyumlu) */
.login-form-group {
    margin-bottom: 16px;
}

.login-form-label {
    display: block;
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 5px;
}

.login-input-wrap {
    position: relative;
    display: flex;
}

.login-form-control {
    width: 100%;
    padding: 9px 12px;
    font-size: 0.875rem;
    color: var(--text-main);
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.login-form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(26, 58, 92, 0.15);
}

.login-form-control::placeholder {
    color: #8C96A2;
}

select.login-form-control {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236C757D' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 30px;
    appearance: none;
}

/* İki Sütunlu Izgara (Üye ol formu için) */
.grid-2-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

/* Kurum Kodu Önizleme */
.kurum-preview-box {
    display: none;
    background-color: var(--primary-light);
    border: 1px solid #B8D0E8;
    color: var(--primary);
    padding: 8px 12px;
    margin-top: 6px;
    font-size: 0.82rem;
    font-weight: 600;
}

.kurum-hint-box {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Şifre Göster/Gizle Butonu */
.pw-toggle-btn {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    padding: 0 12px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    transition: color 0.15s;
}

.pw-toggle-btn:hover {
    color: var(--text-main);
}

/* Beni Hatırla & Şifremi Unuttum */
.login-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    font-size: 0.82rem;
}

.remember-label {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-main);
    cursor: pointer;
    font-weight: 500;
    user-select: none;
}

.remember-checkbox {
    width: 14px;
    height: 14px;
    accent-color: var(--primary);
    cursor: pointer;
}

.forgot-pw-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.15s;
}

.forgot-pw-link:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Butonlar (style.css .btn standartlarında) */
.btn-login-submit {
    width: 100%;
    padding: 10px 16px;
    background-color: var(--primary);
    color: #FFFFFF;
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background-color 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-login-submit:hover {
    background-color: var(--primary-hover);
}

.btn-login-submit:active {
    background-color: #0A2035;
}

.login-divider {
    display: flex;
    align-items: center;
    margin: 20px 0;
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.login-divider::before, .login-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-light);
}

.login-divider span {
    padding: 0 10px;
}

.btn-register-link {
    display: block;
    width: 100%;
    padding: 9px 14px;
    text-align: center;
    background-color: #FFFFFF;
    color: var(--primary);
    border: 1px solid var(--primary);
    font-size: 0.84rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.15s ease;
    cursor: pointer;
}

.btn-register-link:hover {
    background-color: var(--primary-light);
    color: var(--primary-hover);
}

.form-footer-note {
    margin-top: 24px;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ═══════════════════════════════════════════════════════════════
   DUYARLI TASARIM (RESPONSIVE)
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
    .login-page-wrapper {
        flex-direction: column;
    }

    /* Mobilde Login / Üye Ol Form Alanı Üstte */
    .login-form-panel {
        order: 1;
        max-width: 100%;
        min-width: 100%;
        padding: 24px 20px;
        border-bottom: 1px solid var(--border-color);
        justify-content: flex-start;
    }

    /* Mobilde Modül Açıklamaları ve Platform Tanıtımı Altta */
    .login-showcase-panel {
        order: 2;
        flex: none;
        padding: 32px 20px;
        border-right: none;
        border-bottom: none;
    }

    .showcase-title {
        font-size: 1.5rem;
    }

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

@media (max-width: 640px) {
    .login-form-panel {
        padding: 20px 16px;
    }

    .login-card {
        max-width: 100%;
    }

    .tab-nav-bar {
        grid-template-columns: 1fr;
    }

    .grid-2-col {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .showcase-footer {
        flex-direction: column;
        gap: 6px;
        text-align: center;
    }
}