/* RESET & BASE */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-card: #212121;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --accent-green: #00ff88;
    --accent-blue: #0066ff;
    --accent-purple: #aa00ff;
    --shadow: 0 20px 40px rgba(0,0,0,0.3);
    --glow: 0 0 20px rgba(0,255,136,0.3);
}

body {
    font-family: 'Segoe UI', -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ANIMASYONLAR */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes pulseGlow {
    0%, 100% { box-shadow: var(--shadow); }
    50% { box-shadow: var(--glow), var(--shadow); }
}
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.fade-in-up { animation: fadeInUp 0.8s ease-out forwards; }
.pulse-glow { animation: pulseGlow 2s infinite; }
.float { animation: float 3s ease-in-out infinite; }
.spin { animation: spin 2s linear infinite; }

/* CONTAINER */
.container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
    background: radial-gradient(circle at 20% 80%, rgba(120,119,198,0.3) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255,119,198,0.3) 0%, transparent 50%),
                var(--bg-primary);
}

/* ANA SAYFA KART */
.main-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 25px;
    padding: 4rem 3rem;
    text-align: center;
    max-width: 700px;
    width: 100%;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}
.main-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(0,255,136,0.1), transparent);
    transform: rotate(45deg);
    animation: spin 20s linear infinite;
}

/* BUTONLAR */
.btn-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 3rem;
}
.btn {
    position: relative;
    padding: 1.5rem 2rem;
    border: none;
    border-radius: 20px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    min-height: 70px;
}
.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}
.btn:hover::before { left: 100%; }
.btn-kayit {
    background: linear-gradient(45deg, var(--accent-green), #00cc6a);
    box-shadow: 0 10px 30px rgba(0,255,136,0.3);
}
.btn-yonetici {
    background: linear-gradient(45deg, var(--accent-blue), #0052cc);
    box-shadow: 0 10px 30px rgba(0,102,255,0.3);
}
.btn:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0,0,0,0.4);
}

/* FORM */
.form-container {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 25px;
    padding: 3rem;
    max-width: 550px;
    width: 100%;
    box-shadow: var(--shadow);
}
.form-group { margin-bottom: 2rem; }
label {
    display: block;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
}
input, select {
    width: 100%;
    padding: 1.2rem;
    background: rgba(255,255,255,0.05);
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 15px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}
input:focus, select:focus {
    outline: none;
    border-color: var(--accent-green);
    box-shadow: 0 0 0 4px rgba(0,255,136,0.2);
    background: rgba(255,255,255,0.1);
}

/* ADMIN PANEL */
.header {
    background: linear-gradient(45deg, var(--bg-secondary), var(--bg-card));
    backdrop-filter: blur(20px);
    color: var(--text-primary);
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}
.container-grid {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}
.stats-card, .chart-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow);
}
.stat-box {
    background: linear-gradient(45deg, var(--accent-green), #00cc6a);
    color: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
}
.table-container {
    max-height: 500px;
    overflow-y: auto;
    background: rgba(255,255,255,0.02);
    border-radius: 15px;
    border: 1px solid rgba(255,255,255,0.1);
}
table { width: 100%; border-collapse: collapse; }
th, td {
    padding: 1.2rem;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
th {
    background: rgba(255,255,255,0.05);
    font-weight: 600;
    position: sticky;
    top: 0;
    color: var(--accent-green);
}

/* CHART */
.chart-container {
    position: relative;
    height: 400px;
    border-radius: 15px;
}

/* LOGIN */
.login-container {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 25px;
    padding: 3rem;
    max-width: 450px;
    width: 100%;
    box-shadow: var(--shadow);
}
.error {
    background: rgba(244,67,54,0.2);
    border: 1px solid rgba(244,67,54,0.3);
    color: #ff6b6b;
    padding: 1.2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
}
.success {
    background: rgba(76,175,80,0.2);
    border: 1px solid rgba(76,175,80,0.3);
    color: var(--accent-green);
    padding: 1.2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .btn-group { grid-template-columns: 1fr; }
    .container-grid { grid-template-columns: 1fr; padding: 0 1rem; }
    .main-card { padding: 2.5rem 2rem; }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 40px rgba(0, 255, 136, 0.6);
    transform: scale(1.02);
  }
}