:root {
    --bg-dark: #0f172a;
    --bg-gradient: radial-gradient(circle at top right, #1e293b, #0f172a);
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --accent-green: #10b981; /* Sistem çalışıyor rengi */
    --accent-blue: #3b82f6;
    --console-font: 'Courier New', Courier, monospace;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background: var(--bg-gradient);
    height: 100vh;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Hafif grid arka planı (Teknik çizim havası) */
body::before {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -1;
}

.dashboard {
    width: 90%;
    max-width: 1100px;
    height: 80vh;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: var(--glass-border);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    overflow: hidden; /* İçerik taşmasın */
}

/* Üst Panel */
.top-bar {
    height: 50px;
    border-bottom: var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    background: rgba(0,0,0,0.2);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
}

.dot {
    width: 8px;
    height: 8px;
    background: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-green);
    animation: pulse 2s infinite;
}

/* Ana İçerik Düzeni */
.content-area {
    flex: 1;
    display: flex;
    padding: 0;
}

/* Sol Taraf - Terminal / Intro */
.sidebar {
    width: 35%;
    padding: 40px;
    border-right: var(--glass-border);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.terminal-window {
    font-family: var(--console-font);
    font-size: 0.9rem;
    line-height: 1.6;
}

.terminal-line {
    margin-bottom: 10px;
    display: block;
}

.command-prompt { color: var(--accent-green); margin-right: 5px; }
.system-msg { color: var(--text-muted); }
.highlight { color: var(--accent-blue); font-weight: bold; }

/* Sağ Taraf - Araçlar Grid'i */
.tools-panel {
    width: 65%;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: rgba(0,0,0,0.1);
}

.section-title {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 20px;
}

.tool-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 12px;
    padding: 25px;
    text-decoration: none;
    color: var(--text-main);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: relative;
    overflow: hidden;
}

.tool-card:hover {
    background: rgba(255,255,255,0.07);
    border-color: var(--accent-blue);
    transform: translateY(-4px);
}

.tool-card i {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--accent-blue);
}

.tool-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.tool-card span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Kartın köşesine minik dekorasyon */
.tool-card::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 0 30px 30px 0;
    border-color: transparent rgba(255,255,255,0.05) transparent transparent;
    transition: border-color 0.3s;
}
.tool-card:hover::after {
    border-color: transparent var(--accent-blue) transparent transparent;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Mobil Uyumluluk */
@media (max-width: 768px) {
    .dashboard { height: 95vh; width: 95%; overflow-y: auto; }
    .content-area { flex-direction: column; }
    .sidebar, .tools-panel { width: 100%; height: auto; padding: 25px; }
    .sidebar { border-right: none; border-bottom: var(--glass-border); }
}

/* Login Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: #1e293b;
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 16px;
    width: 90%;
    max-width: 400px;
    text-align: center;
    position: relative;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-content h3 {
    color: var(--text-main);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.modal-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.input-group {
    display: flex;
    gap: 10px;
}

.input-group input {
    flex: 1;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 10px 15px;
    border-radius: 8px;
    color: var(--text-main);
    outline: none;
    font-family: var(--console-font);
}

.input-group input:focus {
    border-color: var(--accent-blue);
}

.input-group button {
    background: var(--accent-blue);
    border: none;
    color: white;
    padding: 0 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
}

.input-group button:hover {
    background: #2563eb;
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
}

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

.error-msg {
    color: #ef4444 !important;
    font-size: 0.8rem !important;
    margin-top: 10px;
    margin-bottom: 0 !important;
    min-height: 1.2em;
}

/* Admin Mode Styles */
body.admin-mode .dot {
    background: #ef4444; /* Red for admin/root */
    box-shadow: 0 0 8px #ef4444;
}

body.admin-mode .tool-card {
    border-color: rgba(239, 68, 68, 0.3);
}

body.admin-mode .tool-card:hover {
    border-color: #ef4444;
}

.admin-only {
    display: none;
}

body.admin-mode .admin-only {
    display: block;
}

.edit-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0,0,0,0.5);
    border: none;
    color: var(--text-muted);
    width: 24px;
    height: 24px;
    border-radius: 4px;
    cursor: pointer;
    display: none; /* Hidden by default */
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

.edit-btn:hover {
    color: var(--text-main);
    background: rgba(255,255,255,0.1);
}

body.admin-mode .edit-btn {
    display: flex;
}

.login-btn-header {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    width: 32px;
    height: 32px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.login-btn-header:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
}

body.admin-mode .login-btn-header {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.3s ease-in-out;
    border-color: #ef4444 !important;
}