@import url('variables.css');

/* Reset & Base overrides for landing */
:root {
    --hero-gradient: linear-gradient(135deg, var(--background-darker) 0%, var(--background-lighter) 100%);
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: var(--ui-border);
    --glow: 0 0 80px -20px var(--primary-color-dim, rgba(255, 188, 82, 0.15));
}

body {
    margin: 0;
    overflow-x: hidden;
}

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

/* Nav */
#main-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    border-bottom: var(--bthick) solid var(--divider-color);
    padding: var(--gap) 0;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.brand {
    font-family: var(--title-font-family);
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.links a {
    margin-left: 2rem;
    text-decoration: none;
}

/* Hero */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 2rem;
}

h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.tagline {
    font-size: 1.5rem;
    color: var(--foreground-color);
    opacity: 0.9;
    margin-bottom: 3rem;
    line-height: 1.6;
}

.highlight {
    color: var(--secondary-color);
    font-weight: bold;
}

/* CTA & Install Box */
.cta-group {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

@media (min-width: 600px) {
    .cta-group {
        flex-direction: row;
        justify-content: center;
    }
}

.install-box {
    display: flex;
    align-items: center;
    background: var(--background-darker);
    border: 1px solid var(--ui-border);
    padding: 0.5rem 1rem;
    border-radius: var(--bradius2);
    font-family: var(--code-font-family);
}

.cmd {
    margin-right: 1rem;
    color: var(--brand-green);
}

#copy-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--foreground-color);
    padding: 4px;
    opacity: 0.6;
    transition: opacity 0.2s;

    &:hover {
        opacity: 1;
    }
}

.btn.primary {
    background: linear-gradient(135deg, var(--brand-blue), var(--brand-purple));
    color: white;
    padding: 0.8rem 2rem;
    border-radius: var(--bradius2);
    border: none;
    font-weight: bold;
    text-decoration: none;
    box-shadow: 0 12px 24px rgba(71, 169, 255, 0.28);
    transition:
        transform 0.2s,
        box-shadow 0.2s;

    &:hover {
        transform: translateY(-2px);
        box-shadow: 0 18px 28px rgba(71, 169, 255, 0.35);
    }
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 0 2rem;
    margin: 4rem auto;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2rem;
    border-radius: var(--bradius3);
    transition: transform 0.2s;

    &:hover {
        transform: translateY(-5px);
        border-color: var(--primary-color);
    }
}

.icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

/* Reusable card grid */
.cards-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gap4);
    padding: var(--gap4);
}

.card {
    flex: 1 1 300px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--bradius3);
    overflow: hidden;
    transition:
        transform 0.2s,
        border-color 0.2s,
        box-shadow 0.2s;

    &:hover {
        transform: translateY(-5px);
        border-color: var(--primary-color);
        box-shadow: var(--glow);
    }

    .card-header {
        padding: 2rem;
        color: var(--foreground-color);

        h2 {
            font-size: 1.5rem;
            margin: 0 0 0.5rem 0;
        }

        p {
            opacity: 0.85;
            margin: 0 0 1.5rem 0;
            font-size: 0.95rem;
            line-height: 1.6;
        }
    }

    .card-actions {
        display: flex;
        gap: 1rem;
        flex-wrap: wrap;
        padding: 0 2rem 2rem 2rem;

        a {
            display: inline-block;
            padding: 0.75rem 1.5rem;
            background: linear-gradient(135deg, var(--brand-blue), var(--brand-purple));
            color: white;
            text-decoration: none;
            border-radius: var(--bradius2);
            font-weight: 500;
            border: none;
            box-shadow: 0 12px 24px rgba(71, 169, 255, 0.28);
            transition:
                transform 0.2s,
                box-shadow 0.2s;

            &:hover {
                transform: translateY(-2px);
                box-shadow: 0 18px 28px rgba(71, 169, 255, 0.35);
            }

            &.secondary {
                background: transparent;
                border: 2px solid var(--brand-blue);
                color: var(--brand-blue);
                padding: calc(0.75rem - 2px) calc(1.5rem - 2px);
                box-shadow: none;

                &:hover {
                    background: linear-gradient(135deg, var(--brand-blue), var(--brand-purple));
                    color: white;
                    border-color: transparent;
                    box-shadow: 0 12px 24px rgba(71, 169, 255, 0.28);
                }
            }
        }
    }
}

/* Showcase / Code */
.showcase {
    background: var(--background-lighter);
    padding: 4rem 2rem;
}

.code-split {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

@media (min-width: 768px) {
    .code-split {
        grid-template-columns: 1fr 1fr;
    }
}

.code-panel {
    background: var(--background-darker);
    border-radius: var(--bradius2);
    overflow: hidden;
    border: 1px solid var(--ui-border);
}

.panel-header {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-family: var(--title-font-family);
    color: var(--secondary-color);
}

.jj-panel {
    border-color: var(--primary-color);
    box-shadow: var(--glow);
}

pre {
    margin: 0;
    padding: 1.5rem;
    overflow-x: auto;
}

/* Demo Section */
.demo-section {
    padding: 4rem 2rem;
    text-align: center;
}

#demo-container {
    margin-top: 2rem;
    padding: 2rem;
    border: 1px dashed var(--ui-border);
    border-radius: var(--bradius2);
}

footer {
    border-top: 1px solid var(--divider-color);
    padding: 2rem;
    text-align: center;
    opacity: 0.6;
}

/* ========================================
   SHARED COMPONENT STYLES (for all examples)
   ======================================== */

/* Button System */
.btn {
    /* Box Model */
    padding: var(--gap2) var(--gap4);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap2);

    /* Visual */
    background: var(--background-lighter);
    border: var(--bthick) solid var(--ui-border);
    border-radius: var(--bradius2);

    /* Typography */
    font-family: var(--body-font-family);
    font-size: 1rem;
    font-weight: 600;
    color: var(--foreground-color);
    text-decoration: none;
    text-align: center;

    /* Interaction */
    cursor: pointer;
    transition:
        background var(--animation-speed) ease,
        border-color var(--animation-speed) ease,
        transform var(--animation-speed) ease,
        box-shadow var(--animation-speed) ease;

    &:hover:not(:disabled) {
        transform: translateY(-1px);
        border-color: var(--primary-color);
    }

    &:disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }

    &.primary {
        background: linear-gradient(135deg, var(--brand-blue), var(--brand-purple));
        color: white;
        border: none;
        box-shadow: 0 12px 24px rgba(71, 169, 255, 0.28);

        &:hover:not(:disabled) {
            transform: translateY(-2px);
            box-shadow: 0 18px 28px rgba(71, 169, 255, 0.35);
        }
    }

    &.secondary {
        background: transparent;
        border-color: var(--brand-blue);
        color: var(--brand-blue);

        &:hover:not(:disabled) {
            background: linear-gradient(135deg, var(--brand-blue), var(--brand-purple));
            color: white;
            border-color: transparent;
            box-shadow: 0 12px 24px rgba(71, 169, 255, 0.28);
        }
    }

    &.danger {
        background: transparent;
        border-color: var(--brand-red);
        color: var(--brand-red);

        &:hover:not(:disabled) {
            background: var(--brand-red);
            color: var(--background-color);
        }
    }
}

/* Panel/Card System */
.panel {
    /* Box Model */
    padding: var(--gap4);

    /* Visual */
    background: var(--background-lighter);
    border: var(--bthick) solid var(--ui-border);
    border-radius: var(--bradius2);
}

.panel-dark {
    background: var(--background-darker);
}

.panel-card {
    /* Box Model */
    padding: var(--gap3);

    /* Visual */
    background: var(--background-lighter);
    border: var(--bthick) solid var(--ui-border);
    border-radius: var(--bradius2);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);

    /* Interaction */
    transition:
        transform var(--animation-speed) ease,
        box-shadow var(--animation-speed) ease,
        border-color var(--animation-speed) ease;

    &:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
        border-color: var(--primary-color);
    }
}

/* App Header Pattern */
.app-header {
    /* Box Model */
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--gap3) var(--gap6);

    /* Visual */
    background: var(--background-color);
    border-bottom: var(--bthick) solid var(--ui-border);
    backdrop-filter: blur(10px);

    /* Layout */
    position: sticky;
    top: 0;
    z-index: 100;

    & .header-left {
        display: flex;
        align-items: center;
        gap: var(--gap3);
    }

    & .header-right {
        display: flex;
        align-items: center;
        gap: var(--gap3);
    }

    & .app-title {
        /* Box Model */
        margin: 0;

        /* Typography */
        font-family: var(--title-font-family);
        font-size: clamp(1.25rem, 2vw, 1.5rem);
        font-weight: 700;
        color: var(--primary-color);
    }

    & .logo-icon {
        /* Box Model */
        display: flex;
        justify-content: center;
        align-items: center;
        width: 36px;
        height: 36px;

        /* Visual */
        background: linear-gradient(135deg, var(--primary-color), var(--brand-purple));
        border-radius: var(--bradius3);
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);

        /* Typography */
        font-weight: 800;
        font-size: 1.2rem;
        color: var(--background-color);
    }
}

/* Form Layout Helpers */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--gap2);

    & label {
        font-weight: 500;
        color: var(--foreground-color);
    }
}

.form-row {
    display: flex;
    gap: var(--gap3);
    align-items: flex-end;

    & > * {
        flex: 1;
    }
}

/* Container System */
.app-container {
    padding: var(--gap6);
    max-width: 1600px;
    margin: 0 auto;
}

.app-container-narrow {
    padding: var(--gap6);
    max-width: 960px;
    margin: 0 auto;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .app-header {
        padding: var(--gap3);
        flex-direction: column;
        gap: var(--gap3);
        align-items: stretch;

        & .header-left,
        & .header-right {
            justify-content: center;
        }

        & .header-right {
            flex-direction: column;
            width: 100%;
        }
    }

    .app-container,
    .app-container-narrow {
        padding: var(--gap3);
    }

    .form-row {
        flex-direction: column;
        align-items: stretch;
    }
}