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

html {
    background: #0a0a0a;
}

body {
    min-height: 100vh;
    font-family: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: #0a0a0a;
    position: relative;
    padding: 1.5rem 1rem 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        radial-gradient(2px 2px at 15px 60px, #fff, rgba(0, 0, 0, 0)),
        radial-gradient(2px 2px at 75px 340px, #ccc, rgba(0, 0, 0, 0)),
        radial-gradient(3px 3px at 280px 80px, #fff, rgba(0, 0, 0, 0)),
        radial-gradient(2px 2px at 420px 520px, #aaa, rgba(0, 0, 0, 0)),
        radial-gradient(4px 4px at 650px 150px, #ddd, rgba(0, 0, 0, 0)),
        radial-gradient(2px 2px at 820px 380px, #bbb, rgba(0, 0, 0, 0)),
        radial-gradient(3px 3px at 120px 720px, #ffffff, rgba(0, 0, 0, 0)),
        radial-gradient(2px 2px at 560px 640px, #eee, rgba(0, 0, 0, 0)),
        radial-gradient(4px 4px at 90% 20%, #ccc, rgba(0, 0, 0, 0)),
        radial-gradient(2px 2px at 20% 90%, #fff, rgba(0, 0, 0, 0));
    background-repeat: no-repeat;
    opacity: 0.5;
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 2.5rem 2.2rem;
    background: rgba(20, 20, 20, 0.9);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: 42px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 25px 45px -12px rgba(0, 0, 0, 0.85);
    position: relative;
    z-index: 10;
    transition: box-shadow 0.4s ease, border-color 0.3s;
}

.container:hover {
    box-shadow: 0 30px 55px -12px #000000cc;
    border-color: rgba(255, 255, 255, 0.3);
}

h1 {
    text-align: center;
    font-weight: 600;
    font-size: 2.7rem;
    letter-spacing: 2px;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.subhead {
    text-align: center;
    color: #aaaaaa;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-size: 0.85rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    word-spacing: 6px;
}

/* Token input area */
.token-section {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 1.8rem;
    flex-wrap: wrap;
}

.token-section label {
    margin: 0;
    color: #ccc;
    font-weight: 500;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.token-input-wrap {
    display: flex;
    flex: 1;
    min-width: 250px;
    max-width: 500px;
    gap: 8px;
}

.token-input-wrap input {
    flex: 1;
    padding: 12px 16px;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1.8px solid rgba(255, 255, 255, 0.2);
    border-radius: 40px;
    color: #f0f0f0;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.95rem;
    transition: all 0.25s ease;
    box-shadow: 0 8px 12px -6px #00000080;
}

.token-input-wrap input:focus {
    outline: none;
    border-color: #ffffff;
    box-shadow: 0 0 0 5px rgba(255, 255, 255, 0.1);
    background: rgba(20, 20, 20, 0.9);
}

.token-input-wrap input::placeholder {
    color: #888888;
    opacity: 0.8;
}

.token-apply-btn {
    padding: 12px 24px;
    background: rgba(40, 40, 40, 0.7);
    backdrop-filter: blur(8px);
    border: 1.5px solid rgba(255, 255, 255, 0.25);
    color: #dddddd;
    border-radius: 40px;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    transition: 0.25s;
    box-shadow: 0 4px 12px #00000060;
    white-space: nowrap;
}

.token-apply-btn:hover {
    background: rgba(70, 70, 70, 0.8);
    border-color: #ffffff;
    box-shadow: 0 6px 14px #000;
    transform: scale(1.02);
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 42px;
    background: rgba(40, 40, 40, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    color: #cccccc;
    border-radius: 60px;
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
}

.tab-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.1), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
}

.tab-btn:hover::before {
    opacity: 1;
}

.tab-btn.active {
    background: rgba(60, 60, 60, 0.8);
    color: #ffffff;
    border-color: #ffffff;
    box-shadow: 0 8px 18px #00000060;
    transform: scale(1.02);
}

label {
    display: block;
    margin: 24px 0 8px 8px;
    color: #cccccc;
    font-weight: 500;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
}

textarea,
input[type="url"],
input[type="text"] {
    width: 100%;
    padding: 16px 18px;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1.8px solid rgba(255, 255, 255, 0.2);
    border-radius: 24px;
    color: #f0f0f0;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 1rem;
    resize: vertical;
    box-sizing: border-box;
    transition: all 0.25s ease;
    box-shadow: 0 8px 12px -6px #00000080;
    line-height: 1.5;
}

textarea {
    min-height: 80px;
}

textarea:focus,
input:focus {
    outline: none;
    border-color: #ffffff;
    box-shadow: 0 0 0 5px rgba(255, 255, 255, 0.1);
    background: rgba(20, 20, 20, 0.9);
}

textarea::placeholder,
input::placeholder {
    color: #888888;
    opacity: 0.8;
    font-size: 0.95rem;
}

.btn-primary {
    width: 100%;
    padding: 16px 20px;
    margin-top: 28px;
    background: rgba(40, 40, 40, 0.8);
    color: #ffffff;
    border: 1.5px solid rgba(255, 255, 255, 0.3);
    border-radius: 60px;
    font-size: 1.25rem;
    font-weight: bold;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 20px -5px #000000b0;
    text-transform: uppercase;
    backdrop-filter: blur(5px);
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
    transform: rotate(25deg);
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 30px -8px #000;
    border-color: #ffffff;
    background: rgba(60, 60, 60, 0.9);
}

.btn-primary:hover::after {
    opacity: 0.5;
}

.btn-primary:active {
    transform: translateY(2px);
    box-shadow: 0 5px 15px #000000;
}

.btn-secondary {
    background: rgba(50, 50, 50, 0.7);
    backdrop-filter: blur(12px);
    border: 1.5px solid rgba(255, 255, 255, 0.25);
    color: #dddddd;
    padding: 12px 32px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 1.2px;
    cursor: pointer;
    transition: 0.25s;
    box-shadow: 0 4px 12px #00000060;
    margin-bottom: 10px;
    width: auto;
    display: inline-block;
}

.btn-secondary:hover {
    background: rgba(70, 70, 70, 0.8);
    border-color: #ffffff;
    box-shadow: 0 6px 14px #000;
    transform: scale(1.02);
}

.links-list {
    margin-top: 30px;
}

.link-item {
    background: rgba(15, 15, 15, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 28px;
    border-left: 6px solid #ffffff;
    box-shadow: 0 10px 25px -5px #000000;
    padding: 20px 22px;
    margin-bottom: 16px;
    transition: all 0.2s;
}

.link-item:hover {
    border-left-color: #cccccc;
    box-shadow: 0 15px 35px -5px #000000;
}

.link-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    user-select: none;
}

.link-title {
    font-size: 1.2rem;
    font-weight: bold;
    color: #ffffff;
    margin-bottom: 0;
    flex: 1;
}

.link-url {
    color: #cccccc;
    margin-bottom: 8px;
    word-break: break-all;
}

.link-url a {
    color: #ffffff;
    text-decoration: none;
}

.link-url a:hover {
    color: #cccccc;
    text-decoration: underline;
}

.link-description-wrapper {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease, margin-top 0.3s ease;
    opacity: 0;
    margin-top: 0;
}

.link-description-wrapper.open {
    max-height: 300px;
    opacity: 1;
    margin-top: 12px;
}

.link-description {
    color: #aaaaaa;
    font-size: 0.9rem;
    background: rgba(255, 255, 255, 0.03);
    padding: 12px 16px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    line-height: 1.5;
}

.toggle-arrow {
    font-size: 1.8rem;
    color: #cccccc;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-block;
    margin-left: 12px;
    font-weight: 300;
    line-height: 1;
}

.toggle-arrow.rotated {
    transform: rotate(90deg);
}

.link-actions {
    margin-top: 12px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.link-actions button {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    color: #cccccc;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.link-actions button:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #ffffff;
    color: #ffffff;
}

.status {
    text-align: center;
    margin-top: 24px;
    font-size: 1rem;
    font-weight: 500;
    min-height: 28px;
    color: #cccccc;
    transition: 0.2s;
    letter-spacing: 0.5px;
}

.result.error {
    border-left-color: #ff5555;
    box-shadow: 0 0 0 1px #ff5555 inset, 0 10px 20px #300;
}
.result.error strong {
    color: #ff8888;
}

#addTab,
#editTab {
    display: none;
}

/* ---------- MODAL STYLES ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal {
    background: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1.5px solid rgba(255, 255, 255, 0.25);
    border-radius: 36px;
    padding: 2.5rem 2rem;
    max-width: 550px;
    width: 90%;
    box-shadow: 0 35px 65px rgba(0, 0, 0, 0.9);
    text-align: center;
    animation: scaleIn 0.3s cubic-bezier(0.2, 0.9, 0.4, 1);
}

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.modal h2 {
    font-size: 1.8rem;
    margin-bottom: 0.8rem;
    letter-spacing: 1px;
    color: #fff;
}

.modal .token-display {
    background: #0a0a0a;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 18px;
    padding: 16px 18px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 1rem;
    word-break: break-all;
    color: #ffd966;
    margin: 1.5rem 0;
    text-align: left;
    user-select: all;
    line-height: 1.5;
}

.modal .copy-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: #fff;
    padding: 12px 28px;
    border-radius: 40px;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    transition: 0.25s;
    margin: 0 8px 10px;
}

.modal .copy-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: #fff;
    box-shadow: 0 8px 18px #00000080;
}

.modal .close-modal-btn {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #ccc;
    padding: 12px 28px;
    border-radius: 40px;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    transition: 0.25s;
    margin: 0 8px 10px;
}

.modal .close-modal-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: #fff;
    color: #fff;
}

.modal .warning-text {
    color: #ff8888;
    font-size: 0.9rem;
    margin: 1rem 0 0.5rem;
}

@media (max-width: 550px) {
    .container {
        padding: 1.8rem 1.2rem;
        border-radius: 32px;
    }
    h1 {
        font-size: 2rem;
    }
    .tab-btn {
        padding: 10px 20px;
        font-size: 1rem;
    }
    .btn-primary {
        font-size: 1.1rem;
        padding: 14px;
    }
    .token-section {
        flex-direction: column;
        align-items: stretch;
    }
    .token-input-wrap {
        max-width: 100%;
    }
}