/* renkler */
:root {
    --foreground: #e0e7ff;
    --primary: #00ff41;   /* matrix yesili */
    --secondary: #00d9ff; /* cyan */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: #0a0e1a;
    background-image:
        linear-gradient(rgba(0, 255, 65, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 65, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    color: var(--foreground);
    min-height: 100vh;
    font-family: 'Courier New', monospace;
    padding: 40px 20px;
}

/* buton ve inputlar da ayni yaziyi kullansin */
button, input {
    font-family: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* baslik */
.header {
    text-align: center;
    margin-bottom: 50px;
}
.header h1 {
    font-size: 70px;
    font-weight: 900;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: -2px;
    margin-bottom: 10px;
}
.header p {
    color: var(--secondary);
    font-size: 18px;
    text-transform: uppercase;
    letter-spacing: 4px;
}

/* neon yazi */
.neon-text {
    text-shadow: 0 0 10px var(--primary), 0 0 20px var(--primary), 0 0 30px var(--primary);
}
.neon-text-cyan {
    text-shadow: 0 0 10px var(--secondary), 0 0 20px var(--secondary);
}

/* kart ve buton */
.cyber-card {
    background: rgba(10, 14, 26, 0.8);
    border: 2px solid var(--primary);
    box-shadow: 0 0 20px rgba(0, 255, 65, 0.3), inset 0 0 20px rgba(0, 255, 65, 0.05);
    border-radius: 12px;
}
.cyber-btn {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: bold;
    transition: all 0.3s;
}
.cyber-btn:hover {
    background: var(--primary);
    color: #0a0e1a;
    box-shadow: 0 0 20px var(--primary);
}

/* dil butonu sag ust kosede */
.lang-btn {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 50;
}

/* ozet kutulari */
.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 50px;
}
.stat-card {
    padding: 24px;
}
.stat-card h3 {
    color: #9ca3af;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
}
.stat-big {
    font-size: 32px;
    font-weight: 900;
    color: white;
}
.stat-small {
    font-size: 14px;
    margin-top: 4px;
}
.add-btn {
    width: 100%;
    margin-top: 14px;
    font-size: 13px;
}

/* yanip sonen kutu */
@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 255, 65, 0.3); }
    50% { box-shadow: 0 0 40px rgba(0, 255, 65, 0.6); }
}
.pulse-glow {
    animation: pulse-glow 2s infinite;
}

/* kar yesil zarar kirmizi */
.green { color: var(--primary); }
.red { color: #ef4444; }

/* coin kartlari */
.coin-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 30px;
}
.coin-card {
    padding: 24px;
}
.coin-card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}
.coin-info {
    display: flex;
    align-items: center;
    gap: 12px;
}
.coin-info img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--primary);
}
.coin-info h3 {
    color: var(--primary);
    font-size: 18px;
}
.coin-info .symbol {
    color: #9ca3af;
    font-size: 13px;
    text-transform: uppercase;
}
.remove-btn {
    background: none;
    border: none;
    color: #ef4444;
    font-size: 18px;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 8px;
}
.remove-btn:hover {
    background: rgba(239, 68, 68, 0.1);
}
.coin-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}
.coin-grid .label {
    font-size: 12px;
    color: #6b7280;
    margin-bottom: 4px;
}
.coin-grid .value {
    font-size: 18px;
    font-weight: bold;
    color: white;
}
.coin-rows {
    border-top: 1px solid rgba(0, 255, 65, 0.3);
    padding-top: 16px;
}
.coin-row {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    margin-bottom: 8px;
}
.coin-row span:first-child {
    color: #9ca3af;
}

/* bos portfoy */
.empty-box {
    text-align: center;
    padding: 80px 0;
}
.empty-box p {
    color: #6b7280;
    font-size: 18px;
    margin-bottom: 24px;
}
.add-btn-big {
    font-size: 18px;
    padding: 16px 32px;
}

/* grafik */
.chart-box {
    padding: 24px;
    margin-bottom: 30px;
}
.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.chart-header h3 {
    color: var(--secondary);
    font-size: 18px;
}
.chart-buttons {
    display: flex;
    gap: 8px;
}
.chart-period {
    padding: 6px 12px;
    border: none;
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.3);
    color: #9ca3af;
    cursor: pointer;
    font-weight: bold;
}
.chart-period.active {
    background: var(--primary);
    color: black;
}
#priceChart {
    width: 100%;
    height: 300px;
}
.chart-loading {
    text-align: center;
    color: #6b7280;
    padding: 40px 0;
}

/* acilir pencere (modal) */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    z-index: 100;
}
.modal-box {
    padding: 24px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}
.modal-header h2 {
    color: var(--primary);
    font-size: 24px;
}
.close-btn {
    background: none;
    border: none;
    color: #9ca3af;
    font-size: 28px;
    cursor: pointer;
}
.close-btn:hover {
    color: white;
}

/* metin kutulari */
.text-input {
    width: 100%;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid rgba(0, 255, 65, 0.3);
    border-radius: 8px;
    padding: 12px 16px;
    color: white;
    margin-bottom: 16px;
}
.text-input:focus {
    outline: none;
    border-color: var(--primary);
}

/* arama sonuclari */
.coin-results {
    max-height: 400px;
    overflow-y: auto;
}
.coin-result {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid transparent;
    cursor: pointer;
    margin-bottom: 8px;
}
.coin-result:hover {
    background: rgba(0, 255, 65, 0.1);
    border-color: var(--primary);
}
.coin-result img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}
.coin-result .name {
    flex: 1;
}
.coin-result .name p:first-child {
    color: white;
    font-weight: bold;
}
.coin-result .name p:last-child {
    color: #6b7280;
    font-size: 13px;
    text-transform: uppercase;
}
.coin-result .price {
    color: var(--secondary);
    font-weight: bold;
}

/* secilen coin */
.selected-coin {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--primary);
    margin-bottom: 16px;
}
.selected-coin img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}
.selected-coin p:first-child {
    color: white;
    font-weight: bold;
}
.selected-coin p:last-child {
    color: #6b7280;
    font-size: 13px;
    text-transform: uppercase;
}
#step2 label {
    display: block;
    color: #9ca3af;
    font-size: 14px;
    margin-bottom: 8px;
}
.modal-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}
.cancel-btn {
    padding: 12px 24px;
    background: rgba(239, 68, 68, 0.2);
    border: 2px solid #ef4444;
    color: #ef4444;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
}
.cancel-btn:hover {
    background: rgba(239, 68, 68, 0.3);
}

/* giris ekrani */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.login-box {
    padding: 40px;
    width: 100%;
    max-width: 420px;
    text-align: center;
}
.login-logo {
    font-size: 42px;
    font-weight: 900;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: -1px;
    margin-bottom: 6px;
}
.login-sub {
    color: var(--secondary);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 30px;
}
.login-box label {
    display: block;
    text-align: left;
    color: #9ca3af;
    font-size: 14px;
    margin-bottom: 8px;
}
.login-error {
    color: #ef4444;
    font-size: 13px;
    min-height: 18px;
    margin-bottom: 10px;
}
.login-btn {
    width: 100%;
    font-size: 15px;
    padding: 14px;
    margin-top: 6px;
}
.login-switch {
    margin-top: 20px;
    font-size: 14px;
    color: #9ca3af;
}
.login-switch a {
    color: var(--secondary);
    text-decoration: none;
    margin-left: 6px;
    font-weight: bold;
}
.login-switch a:hover {
    text-shadow: 0 0 10px var(--secondary);
}

/* ust bar (cikis) */
.topbar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}
.welcome-text {
    color: var(--secondary);
    font-size: 14px;
    letter-spacing: 1px;
}
.logout-btn {
    border-color: #ef4444;
    color: #ef4444;
    padding: 8px 14px;
    font-size: 12px;
}
.logout-btn:hover {
    background: #ef4444;
    color: #0a0e1a;
    box-shadow: 0 0 20px #ef4444;
}

/* api hata mesaji */
.api-error {
    border: 2px solid #ef4444;
    background: rgba(239, 68, 68, 0.12);
    color: #fca5a5;
    border-radius: 10px;
    padding: 14px 18px;
    margin-bottom: 30px;
    font-size: 14px;
    text-align: center;
    letter-spacing: 0.5px;
}

/* canli fiyat seridi */
.ticker {
    overflow: hidden;
    border: 2px solid rgba(0, 255, 65, 0.3);
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.4);
    padding: 10px 0;
    margin-bottom: 40px;
    box-shadow: inset 0 0 20px rgba(0, 255, 65, 0.05);
}
.ticker-track {
    display: inline-block;
    white-space: nowrap;
    animation: ticker-scroll 40s linear infinite;
}
.ticker:hover .ticker-track {
    animation-play-state: paused;
}
@keyframes ticker-scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}
.ticker-item {
    display: inline-block;
    padding: 0 26px;
    font-size: 14px;
    letter-spacing: 1px;
}
.ticker-item .t-symbol {
    color: var(--secondary);
    font-weight: bold;
    text-transform: uppercase;
}
.ticker-item .t-price {
    color: #e0e7ff;
    margin: 0 6px;
}

/* portfoy dagilim grafigi */
.alloc-box {
    padding: 24px;
    margin-bottom: 30px;
}
.alloc-box h3 {
    font-size: 18px;
    margin-bottom: 20px;
}
.alloc-content {
    display: flex;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
    justify-content: center;
}
#allocChart {
    width: 220px;
    height: 220px;
}
.alloc-legend {
    flex: 1;
    min-width: 220px;
}
.legend-row {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    margin-bottom: 10px;
}
.legend-dot {
    width: 14px;
    height: 14px;
    border-radius: 4px;
    flex-shrink: 0;
}
.legend-name {
    flex: 1;
    color: #e0e7ff;
    text-transform: uppercase;
}
.legend-percent {
    color: #9ca3af;
    font-weight: bold;
}

/* piyasa ozeti */
.market-box {
    padding: 24px;
    margin-bottom: 40px;
}
.market-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}
.market-header h3 {
    color: var(--primary);
    font-size: 22px;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.market-tabs {
    display: flex;
    gap: 8px;
}
.market-tab {
    padding: 6px 14px;
    border: none;
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.3);
    color: #9ca3af;
    cursor: pointer;
    font-weight: bold;
    font-size: 12px;
    letter-spacing: 1px;
    transition: all 0.2s;
}
.market-tab.active {
    background: var(--primary);
    color: black;
}
.market-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
}
.market-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 255, 65, 0.15);
    transition: all 0.2s;
}
.market-item:hover {
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(0, 255, 65, 0.2);
}
.market-item img {
    width: 34px;
    height: 34px;
    border-radius: 50%;
}
.market-item .m-info {
    flex: 1;
    min-width: 0;
}
.market-item .m-name {
    color: white;
    font-size: 14px;
    font-weight: bold;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.market-item .m-symbol {
    color: #6b7280;
    font-size: 12px;
    text-transform: uppercase;
}
.market-item .m-right {
    text-align: right;
}
.market-item .m-price {
    color: #e0e7ff;
    font-size: 14px;
    font-weight: bold;
}
.market-item .m-change {
    font-size: 13px;
    font-weight: bold;
}
.market-loading {
    text-align: center;
    color: #6b7280;
    padding: 30px 0;
    grid-column: 1 / -1;
}

/* alt bilgi */
.footer {
    text-align: center;
    padding: 30px 0 10px;
    border-top: 1px solid rgba(0, 255, 65, 0.2);
    margin-top: 20px;
}
.footer p {
    color: #6b7280;
    font-size: 13px;
    letter-spacing: 1px;
    margin-bottom: 6px;
}
.footer .footer-sub {
    color: #4b5563;
    font-size: 12px;
}

/* telefon icin */
@media (max-width: 768px) {
    .header h1 { font-size: 44px; }
    .stats { grid-template-columns: 1fr; }
    .coin-list { grid-template-columns: 1fr; }
    .login-box { padding: 28px; }
    .alloc-content { gap: 20px; }
    .market-grid { grid-template-columns: 1fr; }
}