:root {
    --sky: #4cc9f0;
    --sunset: #f72585;
    --sand: #f8f1e5;
    --ocean: #4361ee;
    --night: #0b132b;
    --text: #1a1a1a;
    --muted: #6c757d;
    --card-bg: #ffffff;
    font-size: 16px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text);
    background: linear-gradient(180deg, rgba(76, 201, 240, 0.15) 0%, rgba(248, 241, 229, 0.4) 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: #001ea9;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

header {
    background: linear-gradient(199deg, rgb(88 113 229 / 90%), rgb(67 255 221 / 90%));
    color: white;
    padding: 1.5rem 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1100px;
    margin: 0 auto;
    gap: 1.5rem;
}

.brand {
    font-size: 1.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brand span {
    font-size: 1rem;
    font-weight: 400;
}

.nav-links {
    display: flex;
    align-items: center;
}

.nav-links ul {
    display: flex;
    align-items: center;
    gap: 1rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.nav-item form {
    margin: 0;
}

.nav-item a,
.nav-item button {
    color: inherit;
    font: inherit;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

.nav-item a:hover,
.nav-item button:hover,
.nav-item a:focus-visible,
.nav-item button:focus-visible {
    text-decoration: underline;
    outline: none;
}

.nav-toggle {
    display: none;
    background: rgba(255, 255, 255, 0.18);
    border: none;
    color: white;
    padding: 0.4rem 0.65rem;
    border-radius: 10px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background 0.2s ease;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
    background: rgba(255, 255, 255, 0.28);
    outline: none;
}

.nav-toggle-icon {
    display: inline-block;
    width: 1.25rem;
    text-align: center;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.coming-soon-item {
    display: flex;
    flex-direction: row;
    gap: 0.5rem;
    color: white;
    font-weight: 600;
    align-items: center;
}

.coming-soon-label {
    font-size: 0.95rem;
}

.coming-soon-tag {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.18);
    font-size: 0.75rem;
    letter-spacing: 0.02em;
}

.nav-links a,
.nav-links button {
    color: white;
    font-weight: 500;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    transition: background 0.2s ease, transform 0.2s ease;
}

.nav-links a:hover,
.nav-links button:hover {
    background: rgba(255, 255, 255, 0.18);
    transform: translateY(-1px);
}

.nav-links button {
    border: none;
    background: transparent;
    cursor: pointer;
    font-family: inherit;
}

main {
    flex: 1;
    width: 100%;
    max-width: 1100px;
    margin: 2.5rem auto;
    padding: 0 1.5rem 3rem;
}

.messages {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem;
}

.messages li {
    background: rgba(67, 97, 238, 0.1);
    border-left: 4px solid var(--ocean);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 0.75rem;
}

.messages li.success {
    border-color: #2d9d78;
    background: rgba(45, 157, 120, 0.12);
}

.messages li.error {
    border-color: #d62828;
    background: rgba(214, 40, 40, 0.12);
}

.hero {
    background: rgba(255, 255, 255, 0.8);
    border-radius: 20px;
    padding: 2.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    align-items: center;
    box-shadow: 0 30px 70px -40px rgba(11, 19, 43, 0.45);
    margin-bottom: 2.5rem;
}

.hero h2 {
    margin-top: 0;
    font-size: 2rem;
    color: var(--night);
}

.hero p {
    color: var(--muted);
    margin-bottom: 0.75rem;
}

.hero ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.5rem;
    color: var(--muted);
}

.hero ul li::before {
    content: "•";
    color: var(--sunset);
    margin-right: 0.5rem;
    font-weight: bold;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(
        353deg, rgb(88 113 229 / 90%), rgb(67 255 221 / 90%));
    color: white;
    padding: 0.85rem 1.75rem;
    border-radius: 999px;
    font-weight: 600;
    box-shadow: 0 10px 25px -12px rgba(67, 97, 238, 0.8);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 30px -10px rgba(67, 97, 238, 0.8);
}

.section-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--night);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 20px 45px -30px rgba(11, 19, 43, 0.35);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid rgba(11, 19, 43, 0.05);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 24px 45px -30px rgba(11, 19, 43, 0.35);
}

.trip-meta {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-size: 0.95rem;
    color: var(--muted);
}

.card-actions {
    display: flex;
    gap: 1.25rem;
    margin-top: 1rem;
    font-weight: 600;
}

.danger-link {
    color: #d62828;
}

.danger-link:hover {
    color: #b41f1f;
}

.trip-dates {
    font-weight: 600;
    color: var(--ocean);
}

.empty-state {
    background: rgba(255, 255, 255, 0.75);
    border-radius: 14px;
    padding: 1.5rem;
    text-align: center;
    border: 1px dashed rgba(67, 97, 238, 0.35);
    color: var(--muted);
}

form {
    display: grid;
    gap: 1rem;
    padding: 2rem;
}

.logout-form {
    display: grid;
    gap: 1rem;
    padding: 2rem;
}

label {
    font-weight: 600;
    color: var(--night);
}

input,
textarea,
select {
    width: 100%;
    padding: 0.75rem 0.85rem;
    border-radius: 10px;
    border: 1px solid rgba(11, 19, 43, 0.15);
    background: rgba(255, 255, 255, 0.95);
    font-family: inherit;
    font-size: 1rem;
}

input:focus,
textarea:focus,
select:focus {
    outline: 2px solid rgba(67, 97, 238, 0.4);
}

small {
    color: var(--muted);
    display: block;
    margin-top: 0.35rem;
}

button[type="submit"],
.form-actions .button {
    background: linear-gradient(246deg, var(--ocean), var(--sky));
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button[type="submit"]:hover,
.form-actions .button:hover {
    background: linear-gradient(246deg, var(--ocean), var(--sky));
    transform: translateY(-2px);
    box-shadow: 0 10px 18px -15px rgba(67, 97, 238, 0.9);
}

.form-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.form-actions a {
    color: var(--muted);
}

.form-actions .danger {
    background: linear-gradient(135deg, #d62828, #b21f1f);
    color: #fff;
}

.button-secondary {
    background: rgba(255, 255, 255, 0.12) !important;
    color: var(--night) !important;
    border: 1px solid rgba(11, 19, 43, 0.15);
}

.button-secondary:hover {
    background: rgba(255, 255, 255, 0.2) !important;
    box-shadow: none !important;
}

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(11, 19, 43, 0.35);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 1.5rem;
}

.loading-overlay.active {
    display: flex;
}

.loading-box {
    background: var(--card-bg);
    padding: 2rem 2.5rem;
    border-radius: 18px;
    box-shadow: 0 24px 60px -30px rgba(11, 19, 43, 0.45);
    text-align: center;
    max-width: 360px;
}

.loading-box p {
    margin: 0.5rem 0 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.progress-track {
    position: relative;
    width: 240px;
    margin: 1.5rem auto;
    height: 4px;
    background: rgba(67, 97, 238, 0.15);
    border-radius: 999px;
    overflow: hidden;
}

.progress-plane {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    display: flex;
    justify-content: center;
    animation: plane-travel 1.8s ease-in-out infinite;
}

.plane-icon {
    font-size: 1.5rem;
    text-shadow: 0 6px 18px rgba(67, 97, 238, 0.45);
}

@keyframes plane-travel {
    0% {
        left: -16px;
    }
    50% {
        left: calc(100% - 16px);
    }
    100% {
        left: -16px;
    }
}

.auth-cta {
    text-align: center;
    color: var(--muted);
}

.auth-cta a {
    font-weight: 600;
}

.auth-wrapper {
    max-width: 460px;
    margin: 0 auto;
    display: grid;
    gap: 1rem;
}

.auth-header {
    text-align: center;
    background: rgba(255, 255, 255, 0.85);
    padding: 1.75rem;
    border-radius: 18px;
    box-shadow: 0 18px 40px -35px rgba(11, 19, 43, 0.55);
    border: 1px solid rgba(11, 19, 43, 0.05);
}


.errorlist {
    list-style: none;
    padding: 0;
    margin: 0.35rem 0 0;
    color: #d62828;
    font-size: 0.9rem;
}

.errorlist li::before {
    content: "⚠ ";
}

.itinerary-content {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 18px;
    box-shadow: 0 18px 40px -35px rgba(11, 19, 43, 0.55);
    border: 1px solid rgba(11, 19, 43, 0.05);
    line-height: 1.6;
}

.itinerary-content h1,
.itinerary-content h2,
.itinerary-content h3 {
    color: var(--ocean);
}

.itinerary-content ul,
.itinerary-content ol {
    padding-left: 1.5rem;
}

pre,
code {
    background: rgba(11, 19, 43, 0.06);
    border-radius: 8px;
    padding: 0.35rem 0.5rem;
}

#logout-button {
    background: rgba(255, 255, 255, 0.18);
}

@media (max-width: 720px) {
    header {
        padding: 1.25rem;
    }

    .navbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .nav-links {
        width: 100%;
        display: block;
    }

    .nav-links ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
        display: none;
    }

    .nav-links.open ul {
        display: flex;
    }

    .nav-item a,
    .nav-item button {
        display: block;
    }

    .nav-item {
        width: 100%;
    }

    .coming-soon-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

    main {
        margin: 1.5rem auto;
        padding-bottom: 2rem;
    }

    form {
        padding: 1.5rem;
    }
}